1
|
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] [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.
Collapse
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
| |
Collapse
|
2
|
Griffin C, Asrani SK, Regner KR. Update on Assessment of Estimated Glomerular Filtration Rate in Patients With Cirrhosis. ADVANCES IN KIDNEY DISEASE AND HEALTH 2023; 30:307-314. [PMID: 37389536 DOI: 10.1053/j.akdh.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 06/01/2023] [Accepted: 06/06/2023] [Indexed: 07/01/2023]
Abstract
Kidney disease is associated with adverse outcomes in patients with cirrhosis including increased post-liver transplantation (LT) mortality. Therefore, diagnosis and staging of kidney disease are critical to timely implementation of treatment and have important implications for transplant eligibility. Serum creatinine (sCr) is a key component of the Model for End-Stage Liver Disease score in LT candidates, and sCr-based estimated glomerular filtration rate (eGFR) values play an important role in determining medical urgency for LT. However, the use of sCr to assess kidney function may be limited in the cirrhotic milieu due to decreased creatinine production, interference of bilirubin with some laboratory assays for sCr, and expansion of the volume of distribution of creatinine. Therefore, conventional eGFR equations perform poorly in patients with cirrhosis and may overestimate kidney function leading to delayed diagnosis of acute kidney injury or lower priority for LT in patients with a truly low glomerular filtration rate. In this review, we will provide an update on the use of sCr for diagnosis and staging of kidney disease in patients with cirrhosis, discuss the limitations of sCr-based eGFR equations, and discuss novel eGFR equations that have been developed in patients with cirrhosis.
Collapse
Affiliation(s)
- Connor Griffin
- Division of Hepatology, Baylor University Medical Center, Dallas, TX
| | - Sumeet K Asrani
- Division of Hepatology, Baylor University Medical Center, Dallas, TX
| | - Kevin R Regner
- Division of Nephrology, Medical College of Wisconsin, Milwaukee, WI.
| |
Collapse
|
3
|
Kiani C, Zori AG. Recent advances in pathophysiology, diagnosis and management of hepatorenal syndrome: A review. World J Hepatol 2023; 15:741-754. [PMID: 37397940 PMCID: PMC10308288 DOI: 10.4254/wjh.v15.i6.741] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/18/2023] [Accepted: 05/06/2023] [Indexed: 06/25/2023] Open
Abstract
Hepatorenal syndrome with acute kidney injury (HRS-AKI) is a form of rapidly progressive kidney dysfunction in patients with decompensated cirrhosis and/or acute severe liver injury such as acute liver failure. Current data suggest that HRS-AKI occurs secondary to circulatory dysfunction characterized by marked splanchnic vasodilation, leading to reduction of effective arterial blood volume and glomerular filtration rate. Thus, volume expansion and splanchnic vasoconstriction constitute the mainstay of medical therapy. However, a significant proportion of patients do not respond to medical management. These patients often require renal replacement therapy and may be eligible for liver or combined liver-kidney transplantation. Although there have been advances in the management of patients with HRS-AKI including novel biomarkers and medications, better-calibrated studies, more widely available biomarkers, and improved prognostic models are sorely needed to further improve diagnosis and treatment of HRS-AKI.
Collapse
Affiliation(s)
- Calvin Kiani
- Department of Internal Medicine, Section of Gastroenterology and Hepatology, University of Florida, Gainesville, FL 32610, United States
| | - Andreas G Zori
- Department of Internal Medicine, Section of Gastroenterology and Hepatology, University of Florida, Gainesville, FL 32610, United States
| |
Collapse
|
4
|
Downes KJ, Zuppa AF, Sharova A, Neely MN. Optimizing Vancomycin Therapy in Critically Ill Children: A Population Pharmacokinetics Study to Inform Vancomycin Area under the Curve Estimation Using Novel Biomarkers. Pharmaceutics 2023; 15:1336. [PMID: 37242578 PMCID: PMC10220925 DOI: 10.3390/pharmaceutics15051336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023] Open
Abstract
Area under the curve (AUC)-directed vancomycin therapy is recommended, but Bayesian AUC estimation in critically ill children is difficult due to inadequate methods for estimating kidney function. We prospectively enrolled 50 critically ill children receiving IV vancomycin for suspected infection and divided them into model training (n = 30) and testing (n = 20) groups. We performed nonparametric population PK modeling in the training group using Pmetrics, evaluating novel urinary and plasma kidney biomarkers as covariates on vancomycin clearance. In this group, a two-compartment model best described the data. During covariate testing, cystatin C-based estimated glomerular filtration rate (eGFR) and urinary neutrophil gelatinase-associated lipocalin (NGAL; full model) improved model likelihood when included as covariates on clearance. We then used multiple-model optimization to define the optimal sampling times to estimate AUC24 for each subject in the model testing group and compared the Bayesian posterior AUC24 to AUC24 calculated using noncompartmental analysis from all measured concentrations for each subject. Our full model provided accurate and precise estimates of vancomycin AUC (bias 2.3%, imprecision 6.2%). However, AUC prediction was similar when using reduced models with only cystatin C-based eGFR (bias 1.8%, imprecision 7.0%) or creatinine-based eGFR (bias -2.4%, imprecision 6.2%) as covariates on clearance. All three model(s) facilitated accurate and precise estimation of vancomycin AUC in critically ill children.
Collapse
Affiliation(s)
- Kevin J. Downes
- The Center for Clinical Pharmacology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Clinical Futures, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Division of Infectious Diseases, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Athena F. Zuppa
- The Center for Clinical Pharmacology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Anna Sharova
- The Center for Clinical Pharmacology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Clinical Futures, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Michael N. Neely
- Children’s Hospital Los Angeles, Los Angeles, CA 90027, USA
- Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| |
Collapse
|
5
|
Bonnet M, Jouinot A, Boudou-Rouquette P, Seif V, Villeminey C, Arrondeau J, Vidal M, Batista R, Wislez M, Blanchet B, Goldwasser F, Thomas-Schoemann A. Predictive factors associated with pemetrexed acute toxicity. Eur J Clin Pharmacol 2023; 79:635-641. [PMID: 36951965 DOI: 10.1007/s00228-023-03478-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 03/13/2023] [Indexed: 03/24/2023]
Abstract
PURPOSE Pemetrexed has shown efficacy as monotherapy or in combination with platinum salts in the treatment of non-small cell lung cancer and mesothelioma. However, severe hematological toxicities induced by pemetrexed-based chemotherapy have been observed. Some studies have suggested that drug interactions may be associated with pemetrexed toxicity. The objective of this study was to determine predictive factors, including drug interactions, associated with pemetrexed toxicity. METHODS This retrospective open monocentric study included patients consecutively treated with pemetrexed after a multidisciplinary risk assessment. Patients who experienced toxicity of grade 3 or 4 according to the Common Terminology Criteria for Adverse Events v5.0, or a grade 2 leading to a change in management, during the first four courses of pemetrexed, were assigned to the early limiting toxicities (ELT) group. Univariate and multivariable logistic regression models were used to test the association variables with the occurrence of ELT. RESULTS Seventy-four patients were included in this study (median age: 67 years, with non-small cell lung cancer adenocarcinoma (88%), mesothelioma (7%), or others (5%). Thirty-six patients (49%) were assigned to the ELT group (27 grades 3 and 4; 9 grade 2 with management modification). Three baseline factors were associated with pemetrexed ELT in univariate and multivariate analysis: cystatin clearance (p = 0.0135), albumin level (p = 0.0333), and proton pump inhibitors use (p = 0.035). CONCLUSION To conclude, ELT induced by pemetrexed-based treatments occur frequently in cancer patients in a real-world setting. A pretherapeutic assessment before pemetrexed initiation should include three major checkpoints: use of proton pump inhibitors, sarcopenia, and denutrition evaluation.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Michel Vidal
- Pharmacocinétique et Pharmacochimie, Hôpital Cochin, Paris, France
- UMR8038, CNRS, U.1268 INSERM, Faculty of Pharmacy, University Paris Descartes, PRES Sorbonne Paris Cité, Paris, France
| | | | | | - Benoit Blanchet
- Pharmacocinétique et Pharmacochimie, Hôpital Cochin, Paris, France
| | | | - Audrey Thomas-Schoemann
- Pharmacie, Hôpital Cochin, Paris, France.
- Oncologie, Hôpital Cochin, Paris, France.
- UMR8038, CNRS, U.1268 INSERM, Faculty of Pharmacy, University Paris Descartes, PRES Sorbonne Paris Cité, Paris, France.
| |
Collapse
|
6
|
Optimal Glomerular Filtration Rate Equations for Various Age Groups, Disease Conditions and Ethnicities in Asia: A Systematic Review. J Clin Med 2023; 12:jcm12051822. [PMID: 36902609 PMCID: PMC10002889 DOI: 10.3390/jcm12051822] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 03/12/2023] Open
Abstract
(1) Background: The performance of estimated glomerular filtration rate (eGFR) equations in the Asian population has been widely questioned. The primary objective of this study was to gather evidence regarding optimal GFR equations in Asia for various age groups, disease conditions, and ethnicities. The secondary objective was to see whether the equations based on the combination of creatinine and cystatin C biomarkers if employed are satisfactory across different age groups and disease conditions in various ethnicities in Asia compared to those based on either of the single biomarkers. (2) Methods: Validation studies that had both creatinine and cystatin C-based equations either alone or in combination, validated in specific disease conditions, and those which compared the performance of these equations with exogenous markers were eligible only. The bias, precision, and 30% accuracy (P30) of each equation were recorded accordingly. (3) Results: Twenty-one studies consisting of 11,371 participants were included and 54 equations were extracted. The bias, precision, and P30 accuracies of the equations ranged from -14.54 to 9.96 mL/min/1.73 m2, 1.61 to 59.85 mL/min/1.73 m2, and 4.7% to 96.10%. The highest values of P30 accuracies were found for the JSN-CKDI equation (96.10%) in Chinese adult renal transplant recipients, for the BIS-2 equation (94.5%) in Chinese elderly CKD patients, and Filler equation (93.70%) also in Chinese adult renal transplant recipients. (4) Conclusions: Optimal equations were identified accordingly and it was proven that combination biomarker equations are more precise and accurate in most of the age groups and disease conditions. These can be considered equations of choice for the specific age groups, disease conditions, and ethnicities within Asia.
Collapse
|
7
|
de Araújo TB, de Luca Corrêa H, de Deus LA, Neves RVP, Reis AL, Honorato FS, da S Barbosa JM, Palmeira TRC, Aguiar SS, Sousa CV, Santos CAR, Neto LSS, Amorim CEN, Simões HG, Prestes J, Rosa TS. The effects of home-based progressive resistance training in chronic kidney disease patients. Exp Gerontol 2023; 171:112030. [PMID: 36423855 DOI: 10.1016/j.exger.2022.112030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Faced with lockdowns, it was mandatory the development of supervised home-based RT protocols to keep patients with chronic kidney disease engaged in programs. Nonetheless, there is a lack of scientific literature regarding its effects on patients. PURPOSE To investigate the effects of a supervised home-based progressive resistance training program on functional performance, bone mineral density, renal function, endothelial health, inflammation, glycemic homeostasis, metabolism, redox balance, and the modulation of exerkines in patients with CKD in stage 2. METHODS Patients (n = 31) were randomized and allocated into the control group (CTL; n = 15; 58.07 ± 5.22 yrs) or resistance training group (RT; n = 16; 57.94 ± 2.74 yrs). RT group performed 22 weeks of supervised progressive home-based resistance exercises. Bone mineral density, anthropometric measurements, and functional performance were assessed. Venous blood samples were collected at baseline and after the intervention for the analysis of markers of renal function, endothelial health, inflammation, glycemic homeostasis, metabolism, and redox balance. RESULTS Twenty-two weeks of home-based RT were effective in improving (P < 0.05) functional performance, bone mineral density, uremic profile, ADMA, inflammatory markers, the Klotho-FGF23 axis, glycemic homeostasis markers, and exerkines. These improvements were accompanied by higher concentrations of exerkines and anti-inflammatory cytokines. RT group displayed a decrease in cases of osteopenia after the intervention (RT: 50 % vs. CTL: 86.7 %; X2 = 4.763; P = 0.029). CONCLUSION Results provide new evidence that supervised home-based progressive RT may be a relevant intervention to attenuate the progression of CKD and improve functional capacity, bone mineral density, and the immunometabolic profile. These improvements are associated with positive modulation of several exerkines.
Collapse
Affiliation(s)
- Thaís B de Araújo
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Hugo de Luca Corrêa
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Lysleine A de Deus
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Rodrigo V P Neves
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Andrea L Reis
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Fernando S Honorato
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Jessica M da S Barbosa
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Thalyta R C Palmeira
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Samuel S Aguiar
- Graduate Program in Physical Education, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Caio V Sousa
- Health Technology Lab, College of Arts, Media and Design, Bouvé College of Health Sciences, Northeastern University, Boston 02115, MA, USA
| | | | - Luiz S S Neto
- Federal University of Tocantins, Medicine Department, Tocantins, Brazil
| | - Carlos E N Amorim
- Federal University of Maranhão, Physical Education Department, Maranhão, Brazil
| | - Herbert G Simões
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Jonato Prestes
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil
| | - Thiago S Rosa
- Graduate Program in Physical Education, Catholic University of Brasília, Brasília, DF, Brazil.
| |
Collapse
|
8
|
Campion D, Rizzi F, Bonetto S, Giovo I, Roma M, Saracco GM, Alessandria C. Assessment of glomerular filtration rate in patients with cirrhosis: Available tools and perspectives. Liver Int 2022; 42:2360-2376. [PMID: 35182100 DOI: 10.1111/liv.15198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 11/08/2021] [Accepted: 12/09/2021] [Indexed: 12/07/2022]
Abstract
Renal dysfunction often complicates the course of liver disease, resulting in higher morbidity and mortality. The accurate assessment of kidney function in these patients is essential to early identify, stage and treat renal impairment as well as to better predict the prognosis, prioritize the patients for liver transplantation and decide whether to opt for simultaneous liver-kidney transplants. This review analyses the available tools for direct or indirect assessment of glomerular filtration rate, focusing on the flaws and strengths of each method in the specific setting of cirrhosis. The aim is to deliver a clear-cut view on this complex issue, trying to point out which strategies to prefer in this context, especially in the peculiar setting of liver transplantation. Moreover, a glance is given at future promising tools for glomerular filtration rate assessment, including new biomarkers and new equations specifically modelled for the cirrhotic population.
Collapse
Affiliation(s)
- Daniela Campion
- Department of Gastroenterology and Hepatology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Felice Rizzi
- Department of Gastroenterology and Hepatology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Silvia Bonetto
- Department of Gastroenterology and Hepatology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Ilaria Giovo
- Department of Gastroenterology and Hepatology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Michele Roma
- Department of Gastroenterology and Hepatology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Giorgio M Saracco
- Department of Gastroenterology and Hepatology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| | - Carlo Alessandria
- Department of Gastroenterology and Hepatology, Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino, University of Turin, Turin, Italy
| |
Collapse
|
9
|
Differential Bias for Creatinine- and Cystatin C- Derived Estimated Glomerular Filtration Rate in Critical COVID-19. Biomedicines 2022; 10:biomedicines10112708. [DOI: 10.3390/biomedicines10112708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/14/2022] [Accepted: 10/21/2022] [Indexed: 12/15/2022] Open
Abstract
COVID-19 is a systemic disease, frequently affecting kidney function. Dexamethasone is standard treatment in severe COVID-19 cases, and is considered to increase plasma levels of cystatin C. However, this has not been studied in COVID-19. Glomerular filtration rate (GFR) is a clinically important indicator of renal function, but often estimated using equations (eGFR) based on filtered metabolites. This study focuses on sources of bias for eGFRs (mL/min) using a creatinine-based equation (eGFRLMR) and a cystatin C-based equation (eGFRCAPA) in intensive-care-treated patients with COVID-19. This study was performed on 351 patients aged 18 years old or above with severe COVID-19 infections, admitted to the intensive care unit (ICU) in Uppsala University Hospital, a tertiary care hospital in Uppsala, Sweden, between 14 March 2020 and 10 March 2021. Dexamethasone treatment (6 mg for up to 10 days) was introduced 22 June 2020 (n = 232). Values are presented as medians (IQR). eGFRCAPA in dexamethasone-treated patients was 69 (37), and 74 (46) in patients not given dexamethasone (p = 0.01). eGFRLMR was not affected by dexamethasone. eGFRLMR in females was 94 (20), and 75 (38) in males (p = 0.00001). Age and maximal CRP correlated negatively to eGFRCAPA and eGFRLMR, whereas both eGFR equations correlated positively to BMI. In ICU patients with COVID-19, dexamethasone treatment was associated with reduced eGFRCAPA. This finding may be explained by corticosteroid-induced increases in plasma cystatin C. This observation is important from a clinical perspective since adequate interpretation of laboratory results is crucial.
Collapse
|
10
|
Caldiroli L, Molinari P, Abinti M, Rusconi C, Castellano G, Vettoretti S. Can Mediterranean Diet Have a Positive Impact on Kidney Health? A Pending Answer to a Long-Time Question. Nutrients 2022; 14:nu14204366. [PMID: 36297050 PMCID: PMC9608621 DOI: 10.3390/nu14204366] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/13/2022] [Accepted: 10/15/2022] [Indexed: 11/16/2022] Open
Abstract
Dietary studies conducted in chronic kidney disease (CKD) patients were focused on the quantities of single nutrients, however it is possible that the excessive attention put on the restriction of proteins, sodium, potassium and phosphorus may compromise the overall quality of the diet in terms of micronutrients and palatability. Instead, concentrating on the nutritional quality healthy dietary patterns, may provide a better approach to improve nutritional prescriptions in CKD patients. All these dietary regimens share common features as reduced content of red meat, salt and saturated fatty acids, and higher fiber content, but may differ in terms of single nutrients consumption. In particular, Mediterranean Diet (Med Diet) has been associated with reduced incidence of diabetes, cardiovascular diseases and obesity, all conditions that are also strictly related to CKD. Given its low content of animal proteins and high contents of fiber it is possible that Med Diet may exert also positive effects on CKD as well as on its metabolic complications. In this review we summarize the role of Med Diet in primary prevention of CKD and on its progression.
Collapse
Affiliation(s)
- Lara Caldiroli
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
| | - Paolo Molinari
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy
| | - Matteo Abinti
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy
| | - Chiara Rusconi
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy
| | - Giuseppe Castellano
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy
| | - Simone Vettoretti
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
- Correspondence: ; Tel.: +39-02-55-03-45-52; Fax: +39-02-55-03-45-50
| |
Collapse
|
11
|
Abstract
OBJECTIVES In critically ill children, severely altered pharmacokinetics may result in subtherapeutic β-lactam antibiotic concentrations when standard pediatric dosing regimens are applied. However, it remains unclear how to recognize patients most at risk for suboptimal exposure and their outcome. This study aimed to: 1) describe target attainment for β-lactam antibiotics in critically ill children, 2) identify risk factors for suboptimal exposure, and 3) study the association between target nonattainment and clinical outcome. DESIGN Post hoc analysis of the "Antibiotic Dosing in Pediatric Intensive Care" study (NCT02456974, 2012-2019). Steady-state trough plasma concentrations were classified as therapeutic if greater than or equal to the minimum inhibitory concentration of the (suspected) pathogen. Factors associated with subtherapeutic concentrations and clinical outcome were identified by logistic regression analysis. SETTING The pediatric and cardiac surgery ICU of a Belgian tertiary-care hospital. PATIENTS One hundred fifty-seven patients (aged 1 mo to 15 yr) treated intravenously with amoxicillin-clavulanic acid, piperacillin-tazobactam, or meropenem. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Three hundred eighty-two trough concentrations were obtained from 157 patients (median age, 1.25 yr; interquartile range, 0.4-4.2 yr). Subtherapeutic concentrations were measured in 39 of 60 (65%), 43 of 48 (90%), and 35 of 49 (71%) of patients treated with amoxicillin-clavulanic acid, piperacillin-tazobactam, and meropenem, respectively. Estimates of glomerular filtration rate (eGFR; 54% increase in odds for each sd increase in value, 95% CI, 0.287-0.736; p = 0.001) and the absence of vasopressor treatment (2.8-fold greater odds, 95% CI, 1.079-7.253; p = 0.034) were independently associated with target nonattainment. We failed to identify an association between antibiotic concentrations and clinical failure. CONCLUSIONS Subtherapeutic β-lactam concentrations are common in critically ill children and correlate with renal function. eGFR equations may be helpful in identifying patients who may require higher dosing. Future studies should focus on the impact of subtherapeutic concentrations on clinical outcome.
Collapse
|
12
|
Wang X, Guo N, Chen Y, Dai H. A new model to predict acute kidney injury after cardiac surgery in patients with renal insufficiency. Ren Fail 2022; 44:767-776. [PMID: 35505569 PMCID: PMC9090423 DOI: 10.1080/0886022x.2022.2071297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Objective To establish a simple model for predicting postoperative acute kidney injury (AKI) requiring renal replacement therapy (RRT) in patients with renal insufficiency (CKD stages 3–4) who underwent cardiac surgery. Methods A total of 330 patients were enrolled. Among them, 226 were randomly selected for the development group and the remaining 104 for the validation group. The primary outcome was AKI requiring RRT. A nomogram was constructed based on the multivariate analysis with variables selected by the application of the least absolute shrinkage and selection operator. Meanwhile, the discrimination, calibration, and clinical power of the new model were assessed and compared with those of the Cleveland Clinic score and Simplified Renal Index (SRI) score in the validation group. Results: The rate of RRT in the development group was 10.6% (n = 24), while the rate in the validation group was 14.4% (n = 15). The new model included four variables such as postoperative creatinine, aortic cross‐clamping time, emergency, and preoperative cystatin C, with a C-index of 0.851 (95% CI, 0.779–0.924). In the validation group, the areas under the receiver operating characteristic curves for the new model, SRI score, and Cleveland Clinic score were 0.813, 0.791, and 0.786, respectively. Furthermore, the new model demonstrated greater clinical net benefits compared with the Cleveland Clinic score or SRI score. Conclusions We developed and validated a powerful predictive model for predicting severe AKI after cardiac surgery in patients with renal insufficiency, which would be helpful to assess the risk for severe AKI requiring RRT.
Collapse
Affiliation(s)
- Xijian Wang
- Department of Nephrology, Affiliated Hospital of Nantong University, Nantong Jiangsu, China
| | - Naifeng Guo
- Department of Nephrology, Affiliated Hospital of Nantong University, Nantong Jiangsu, China
| | - Ying Chen
- Department of Epidemiology and Medical Statistics, Nantong University School of Public Health, Nantong Jiangsu, China
| | - Houyong Dai
- Department of Nephrology, Affiliated Hospital of Nantong University, Nantong Jiangsu, China
| |
Collapse
|
13
|
Karger AB, Long T, Inker LA, Eckfeldt JH. Improved Performance in Measurement of Serum Cystatin C by Laboratories Participating in the College of American Pathologists' 2019 CYS Survey. Arch Pathol Lab Med 2022; 146:1218-1223. [PMID: 35192685 DOI: 10.5858/arpa.2021-0306-cp] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2021] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Use of cystatin C for glomerular filtration rate estimation (eGFR) has garnered heightened interest as a means to avoid race-based medicine, since eGFRcys equations do not require specification of race. Before considering more widespread use of cystatin C, it is important to confirm that assays provide accurate measurements of cystatin C concentration, to ensure accurate GFR estimates. OBJECTIVE.— To determine if the accuracy of cystatin C measurements in laboratories participating in the College of American Pathologists' (CAP) Cystatin C (CYS) survey has improved since 2014. DESIGN.— Two fresh frozen serum pools, the first from healthy donors without chronic kidney disease (CKD), and the second from patients with CKD, along with a synthetically prepared elevated cystatin C pool, were sent to laboratories participating in the 2019 CYS-A survey. Target values were established by using 2 immunoassays and a bracketed 2-point calibration with diluted ERM-DA471/IFCC reference material. RESULTS.— For the healthy donor fresh frozen pool (ERM-DA471/IFCC-traceable target of 0.725 mg/L), the all-method mean (standard deviation, coefficient of variation) was 0.731 mg/L (0.071, 9.7%). For the CKD pool (ERM-DA471/IFCC-traceable target of 2.136 mg/L), the all-method mean was 2.155 mg/L (0.182, 8.4%). For the synthetically spiked pool (ERM-DA471/IFCC-traceable target of 1.843 mg/L), the all-method mean was 1.886 mg/L (0.152, 8.1%). This represents marked improvement in accuracy and between-method agreement compared to the 2014 CAP survey. CONCLUSIONS.— Manufacturers have markedly improved accuracy and between-method agreement of cystatin C measurement procedures since 2014, which allows for greater confidence in estimated GFR relying on cystatin C.
Collapse
Affiliation(s)
- Amy B Karger
- From the Department of Laboratory Medicine & Pathology, University of Minnesota, Minneapolis (Karger, Eckfeldt)
| | - Thomas Long
- The Department of Biostatistics, College of American Pathologists, Northfield, Illinois (Long)
| | - Lesley A Inker
- William B. Schwartz Division of Nephrology, Tufts Medical Center, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts (Inker)
| | - John H Eckfeldt
- From the Department of Laboratory Medicine & Pathology, University of Minnesota, Minneapolis (Karger, Eckfeldt)
| | | |
Collapse
|
14
|
Ottosson Frost C, Gille-Johnson P, Blomstrand E, St-Aubin V, Leion F, Grubb A. Cystatin C-based equations for estimating glomerular filtration rate do not require race or sex coefficients. Scandinavian Journal of Clinical and Laboratory Investigation 2022; 82:162-166. [PMID: 35107398 DOI: 10.1080/00365513.2022.2031279] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Estimation or measurement of glomerular filtration rate (GFR) is generally required for optimal treatment of patients. Plasma creatinine has been used for estimation of GFR since 1926 and plasma cystatin C since 1979. The creatinine level is strongly dependent upon muscle mass and as the average muscle mass of different populations may vary, creatinine-based GFR-estimating equations have since 1999 used more than 10 different race coefficients to improve the diagnostic performance of such equations. But 'race' cannot be determined by biological measurements and is thus an ill-defined biological entity and controversial as it involves self-reporting and social considerations. In contrast, cystatin C-levels are virtually independent of muscular mass and cystatin C-based GFR-estimating equations do not require race coefficients for reliable estimation of GFR. The use of cystatin C-based GFR-estimating equations, alone or in conjunction with creatinine-based GFR-estimating equations, is therefore highly recommended to eliminate the use of race coefficients in estimating GFR. Although sex is a more biology-oriented parameter than race, sex terms may in some cases be controversial, involving self-reporting and social considerations. However, sex terms are not required for adequate estimation of GFR using cystatin C-based equations.
Collapse
Affiliation(s)
- Carl Ottosson Frost
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Per Gille-Johnson
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Emanuel Blomstrand
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Viggo St-Aubin
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Felicia Leion
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| | - Anders Grubb
- Department of Clinical Chemistry, Skåne University Hospital, Lund University, Lund, Sweden
| |
Collapse
|
15
|
Khalaf MM, Hassan SM, Sayed AM, Abo-Youssef AM. Ameliorate impacts of scopoletin against vancomycin-induced intoxication in rat model through modulation of Keap1-Nrf2/HO-1 and IκBα-P65 NF-κB/P38 MAPK signaling pathways: Molecular study, molecular docking evidence and network pharmacology analysis. Int Immunopharmacol 2022; 102:108382. [PMID: 34848155 DOI: 10.1016/j.intimp.2021.108382] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/09/2021] [Accepted: 11/15/2021] [Indexed: 12/16/2022]
Abstract
Nephrotoxicity is an indication for the damage of kidney-specific detoxification and excretion mechanisms by exogenous or endogenous toxicants. Exposure to vancomycin predominantly results in renal damage and losing the control of body homeostasis. Vancomycin-treated rats (200 mg/kg/once daily, for seven consecutive days, i.p.) revealed significant increase in serum pivotal kidney function, oxidative stress, and inflammatory biomarkers. Histologically, vancomycin showed diffuse acute tubular necrosis, denudation of epithelium and infiltration of inflammatory cells in the lining tubular epithelium in cortical portion. In the existing study, the conservative consequences of scopoletin against vancomycin nephrotoxicity was investigated centering on its capacity to alleviate oxidative strain and inflammation through streamlining nuclear factor (erythroid-derived-2) like 2 (Nrf2)/heme oxygenase-1 (HO-1) signaling and prohibiting the nuclear factor kappa B (NF-κB)/mitogen-activated protein kinase (p38 MAPK) pathway. With respect to vancomycin group, scopoletin pretreatment (50 mg/kg/once daily, i.p.) efficiently reduced kidney function, oxidative stress biomarkers and inflammatory mediators. Moreover, histological and immunohistochemical examination of scopoletin-treated group showed remarkable improvement in histological structure and reduced vancomycin-induced renal expression of iNOS, NF-κB and p38 MAPK. In addition, scopoletin downregulated (Kelch Like ECH Associated Protein1) Keap1, P38MAPK and NF-κB expression levels while upregulated renal expression levels of regulatory protein (IκBα), Nrf2 and HO-1. Furthermore, molecular docking and network approach were constructed to study the prospect interaction between scopoletin and the targeted proteins that streamline oxidative stress and inflammatory pathways. The present investigations elucidated that scopoletin co-treatment with vancomycin may be a rational curative protocol for mitigation of vancomycin-induced renal intoxication.
Collapse
Affiliation(s)
- Marwa M Khalaf
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
| | - Samar M Hassan
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Fayoum University, Fayoum, Egypt.
| | - Ahmed M Sayed
- Biochemistry Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt.
| | - Amira M Abo-Youssef
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
| |
Collapse
|
16
|
Koch VH. Obesity Facts and Their Influence on Renal Function Across the Life Span. Front Med (Lausanne) 2021; 8:704409. [PMID: 34869407 PMCID: PMC8632716 DOI: 10.3389/fmed.2021.704409] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 09/08/2021] [Indexed: 02/06/2023] Open
Abstract
Obesity is a chronic disease, with a rapidly increasing prevalence worldwide. Body mass index (BMI) provides the most useful population-level measure of overweight and obesity. For adults, overweight is defined as a BMI (Kg/m2) ≥ 25, and obesity as a BMI ≥ 30, for non-Asians and ≥ 27.5 for Asians. Abdominal obesity can be defined as a waist circumference equal to or higher than 102 cm for men and ≥88 cm for women. The definition of children and adolescents BMI changes with age and sex. Obesity may be exogenous or endogenous obesity, the latter is multifactorial and predominantly manifested during childhood. Presently, overweight and obesity are linked to more deaths worldwide than underweight. The total kidney glomerular filtration rate (GFR) is determined by the sum of nephrons and the GFR within each nephron or single nephron GFR. In clinical practice, GFR is more frequently calculated by GFR estimating equations based upon the plasma levels of creatinine, cystatin C, or both. The measured value of plasma creatinine is strongly influenced by non-GFR factors, by its tubular and gastrointestinal secretion, and by the problems associated with the lack of standardization of creatinine's laboratory assay discrediting it as an ideal GFR biomarker. Unlike creatinine, cystatin C plasma levels are mainly determined by GFR. Obesity may affect the kidney, via development of systemic arterial hypertension and/or diabetes mellitus, or directly, by ectopic accumulation of adipose tissue in the kidney. As obesity is a clinical condition associated with altered body composition, creatinine may not be the ideal biomarker for GFR measurement in obese individuals.
Collapse
Affiliation(s)
- Vera H Koch
- Pediatric Nephrology Unit, Department of Pediatrics, Instituto da Criança e do Adolescente do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| |
Collapse
|
17
|
Tsuji Y. Hospital Pharmacometrics for Optimal Individual Administration of Antimicrobial Agents for Anti-methicillin-resistant Staphylococcus aureus Infected Patients. Biol Pharm Bull 2021; 44:1174-1183. [PMID: 34471044 DOI: 10.1248/bpb.b21-00002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Therapeutic drug monitoring and target concentration intervention based on population pharmacokinetic and pharmacodynamic models has been strongly recommended for anti-methicillin-resistant Staphylococcus aureus (MRSA) agents in order to provide appropriate antimicrobial chemotherapy to each individual patient, and pharmacokinetic and pharmacodynamic analyses in hospitalized patients have been actively conducted, as evidenced with vancomycin. Teicoplanin, daptomycin, and linezolid have been the most studied antibiotics, using population pharmacokinetics of patients with MRSA. Infections caused by MRSA have higher severity and fatality rates than other antimicrobial-susceptible infections. Therefore, many medical facilities have been implementing infection control programs based on antimicrobial stewardship to prevent nosocomial infections and drug-resistant strains. Studies detailing pharmacometrics for these antibiotics have been reported to elucidate the pharmacokinetic and pharmacodynamic properties, to determine significant factors influencing variabilities between individuals, and to develop target concentration interventions and dosing regimens for adults, the elderly, patients with renal insufficiency including those on continuous renal replacement therapies, patients with low body weight, obese patients, and pediatric patients. This review presents the details of our recent research on the optimal dosing design of antimicrobial agents for the treatment of MRSA infection based on hospital pharmacometrics. In addition, the prospect of using modeling and simulation has shown major advantages in supporting dosing regimen selection.
Collapse
Affiliation(s)
- Yasuhiro Tsuji
- Center for Pharmacist Education, School of Pharmacy, Nihon University
| |
Collapse
|
18
|
Harris M, Varnell C, Taylor V, Nehus ST, Zhang B, Erkan E. Hypervitaminosis A in Pediatric Patients With Advanced Chronic Kidney Disease. J Ren Nutr 2021; 32:275-281. [PMID: 34103212 PMCID: PMC8643365 DOI: 10.1053/j.jrn.2021.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 03/07/2021] [Accepted: 03/14/2021] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Hypervitaminosis A is well-described but overlooked in chronic kidney disease (CKD) and has been associated with hypercalcemia, contributing to mineral bone disease. Our objective is to assess prevalence of hypervitaminosis A and its association with bone health in an advanced-CKD population. METHODS We performed a retrospective review of 58 children with CKD 4-5 to examine the association between vitamin A levels and bone health and compared these values between a primarily formula-fed (FF) and nonprimarily formula-fed cohort (NFF). RESULTS Fifty-six of 58 patients (97%) had hypervitaminosis A with a mean vitamin A level of 1,475 ± 597 mcg/dL. When compared with the upper limit of normal vitamin A level for age, the FF group's vitamin A level was 2.9x upper limit of normal and the NFF group's vitamin A level was 2.2x upper limit of normal (P = .02). The mean calcium level was 10.3 mg/dL in the FF group and 9.8 mg/dL in the NFF group (P = .057). Percent of patients lower than, within, or greater than goal parathyroid hormone range was statistically significant with 15 (62%) of the FF group lower than goal and 16 (72%) of the NFF cohort greater than goal (P = .006). CONCLUSIONS We concluded vitamin A and calcium levels are higher in the FF versus the NFF population. FF patients are more likely to have parathyroid hormone levels lower than the goal range, placing them at risk for adynamic bone disease. We recommend monitoring vitamin A levels as part of routine nutritional assessments and dietary interventions to prevent hypervitaminosis A to improve bone health in late CKD.
Collapse
Affiliation(s)
- Meredith Harris
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.
| | - Charles Varnell
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; University of Cincinnati College of Medicine, Cincinnati, OH; James M. Anderson Center for Health Systems Excellence, Cincinnati, OH
| | - Veronica Taylor
- Division of Nephrology, University of Nebraska Medical Center and Children's Hospital and Medical Center, Omaha, NE
| | - Susan Tulley Nehus
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Bin Zhang
- University of Cincinnati College of Medicine, Cincinnati, OH; Division is Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Elif Erkan
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; University of Cincinnati College of Medicine, Cincinnati, OH
| |
Collapse
|
19
|
Progression of albuminuria in patients with sickle cell anemia: a multicenter, longitudinal study. Blood Adv 2021; 4:1501-1511. [PMID: 32289161 DOI: 10.1182/bloodadvances.2019001378] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/16/2020] [Indexed: 12/28/2022] Open
Abstract
Sickle cell nephropathy results in chronic kidney disease (CKD), which is associated with significant morbidity and mortality in sickle cell anemia (SCA). Albuminuria is an early manifestation of sickle nephropathy; however, little is known about progression of albuminuria or its correlation with glomerular filtration rate (GFR) decline or CKD. We studied nephropathy progression in 303 SCA participants in a prospective, multicenter, longitudinal study. We collected steady-state urine and serum samples yearly and assessed albumin/creatinine ratio (ACR), estimated GFR (eGFR), and SCA and nephropathy biomarkers. Participants with albuminuria (ACR ≥30 mg/g) for ≥2 annual measurements were classified as having persistent albuminuria (PA). At baseline (mean age, 21 years; range, 2-64 years), 32% had albuminuria. In longitudinal multivariate analysis, ACR was associated with sex, anemia, older age, and higher bilirubin and kidney injury molecule-1 levels. Albuminuria increased with age by 3.5 mg/g per year (P < .0001). Of 175 participants with ≥3 annual samples, 81% with baseline albuminuria ≥100 mg/g developed PA. Decreased eGFR and adult CKD were associated with PA (P = .002 and P = .02, respectively), but not with baseline albuminuria. Rate of eGFR decline was steeper among adults (but not children) with albuminuria, compared with those without (P = .02). Participants with PA were more likely to have rapid eGFR decline compared with those without (P = .03). In this longitudinal study, albuminuria progressed with age, and adults with albuminuria had worse eGFR decline than those without. Albuminuria ≥100 mg/g predicted PA, which was associated with rapid eGFR decline and CKD development in adults with SCA. This trial was registered at www.clinicaltrials.gov as #NCT02239016.
Collapse
|
20
|
Rosa TDS, Corrêa HL, Barbosa LP, Santos PAD, Leite PLDA, Aguiar SS, Deus LA, Maciel LA, Neves RVP, Simoes HG. Age-related Decline in Renal Function is Attenuated in Master Athletes. Int J Sports Med 2021; 42:889-895. [PMID: 33684951 DOI: 10.1055/a-1332-1594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This study analyzed the kidney function and biomarkers of health in lifelong-trained sprinters and endurance runners, and compared them to untrained aged-matched and young controls. Sixty-two men (21-66 yr.) were recruited and allocated as master athletes from sprints (n=25), master athletes from endurance events (n=8), untrained middle-aged (n=14) and young controls (n=15). Participants underwent anamnesis, anthropometric measures and blood sampling for biochemical analyses of klotho, FGF23 and estimated glomerular filtration rate. Master sprinters presented better kidney function in relation to endurance athletes and their untrained peers (P<0.0001). A number of biochemical variables were observed that negatively (i. e., GDF-15, TGF-Beta, IL-18) or positively (i. e., klotho/FGF23 ratio and sestrin-2) correlated with eGFR. Sestrin-2 presented the strongest association with eGFR (r=0.5, P=0.03). Results also revealed that lifelong-trained individuals presented the highest probability of having better values for cystatin C and thus an estimated glomerular filtration rate that was 37-49% higher than untrained peers. Master sprinters presented better kidney function in relation to endurance athletes and middle-aged untrained peers. Sestrin-2 may play a role in exercise-induced kidney function protection.
Collapse
Affiliation(s)
- Thiago Dos Santos Rosa
- Graduate Program on Physical Education and Health, Catholic University of Brasilia, Taguatinga, Brazil
| | - Hugo Luca Corrêa
- Graduate Program on Physical Education and Health, Catholic University of Brasilia, Taguatinga, Brazil
| | - Lucas Pinheiro Barbosa
- Graduate Program on Physical Education and Health, Catholic University of Brasilia, Taguatinga, Brazil
| | | | | | - Samuel Silva Aguiar
- Graduate Program on Physical Education and Health, Catholic University of Brasilia, Taguatinga, Brazil
| | - Lysleine Alves Deus
- Graduate Program on Physical Education and Health, Catholic University of Brasilia, Taguatinga, Brazil
| | - Larissa Alves Maciel
- Graduate Program on Physical Education and Health, Catholic University of Brasilia, Taguatinga, Brazil
| | | | - Herbert Gustavo Simoes
- Graduate Program on Physical Education and Health, Catholic University of Brasilia, Taguatinga, Brazil
| |
Collapse
|
21
|
Akhtar E, Roy AK, Haq MA, von Ehrenstein OS, Ahmed S, Vahter M, Ekstrom EC, Kippler M, Wagatsuma Y, Raqib R. A longitudinal study of rural Bangladeshi children with long-term arsenic and cadmium exposures and biomarkers of cardiometabolic diseases. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 271:116333. [PMID: 33535364 DOI: 10.1016/j.envpol.2020.116333] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 12/14/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
There is growing interest in understanding the contribution of environmental toxicant exposure in early life to development of cardiometabolic diseases (CMD) in adulthood. We aimed to assess associations of early life exposure to arsenic and cadmium with biomarkers of CMD in children in rural Bangladesh. From a longitudinal mother-child cohort in Matlab, Bangladesh, we followed up 540 pairs. Exposure to arsenic (U-As) and cadmium (U-Cd) was assessed by concentrations in urine from mothers at gestational week 8 (GW8) and children at ages 4.5 and 9 years. Blood pressure and anthropometric indices were measured at 4.5 and 9 years. Metabolic markers (lipids, glucose, hemoglobin A1c, adipokines, estimated glomerular filtration rate (eGFR) were determined in plasma/blood of 9 years old children. In linear regression models, adjusted for child sex, age, height-for-age z score (HAZ), BMI-for-age z score (BAZ), socioeconomic status (SES) and maternal education, each doubling of maternal and early childhood U-Cd was associated with 0.73 and 0.82 mmHg increase in systolic blood pressure (SBP) respectively. Both early and concurrent childhood U-Cd was associated with diastolic (D)BP (β = 0.80 at 4.5 years; β = 0.75 at 9 years). Each doubling of U-Cd at 9 years was associated with decrements of 4.98 mg/dL of total cholesterol (TC), 1.75 mg/dL high-density lipoprotein (HDL), 3.85 mg/dL low-density lipoprotein (LDL), 0.43 mg/dL glucose and 4.29 units eGFR. Each doubling of maternal U-Cd was associated with a decrement of 1.23 mg/dL HDL. Both maternal and childhood U-As were associated with decrement in TC and HDL. Multiple comparisons were checked with family-wise error rate Bonferroni-type-approach. The negative associations of arsenic and cadmium with biomarkers of CMD in preadolescent children indicated influence of both metal(loid)s on fat and carbohydrate metabolism, while cadmium additionally influenced kidney function and BP. Thus, fewer outcomes were associated with U-As compared to U-Cd at preadolescence.
Collapse
Affiliation(s)
- Evana Akhtar
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Anjan Kumar Roy
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Md Ahsanul Haq
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Ondine S von Ehrenstein
- Department of Community Health Sciences and Epidemiology, Fielding School of Public Health, University of California Los Angeles, USA
| | - Sultan Ahmed
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Marie Vahter
- Institute of Environmental Medicine, Karolinska Institutet, SE- 171 77, Stockholm, Sweden
| | - Eva-Charlotte Ekstrom
- Department of Women's and Children's Health, Uppsala University, SE-751 85, Uppsala, Sweden
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, SE- 171 77, Stockholm, Sweden
| | - Yukiko Wagatsuma
- Department of Clinical Trial and Clinical Epidemiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Rubhana Raqib
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh.
| |
Collapse
|
22
|
Corrêa HL, Neves RVP, Deus LA, Souza MK, Haro AS, Costa F, Silva VL, Santos CAR, Moraes MR, Simões HG, Navalta JW, Prestes J, Rosa TS. Blood Flow Restriction Training Blunts Chronic Kidney Disease Progression in Humans. Med Sci Sports Exerc 2021; 53:249-257. [PMID: 32826635 DOI: 10.1249/mss.0000000000002465] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
PURPOSE This study aimed to verify the effect of 6 months of periodized resistance training (RT) with and without blood flow restriction (BFR) in patients with stage 2 chronic kidney disease (CKD) on glomerular filtration rate (GFR), uremic parameters, cytokines, and klotho-fibroblast growth factor 23 (FGF23) axis. METHODS A total of 105 subjects were randomized in three groups of 35 each: control (CTL), RT, and RT + BFR. A first visit was required for an anamnesis to evaluate the number of medications and anthropometric measurements (body weight, height, and body mass index). Muscle strength (one-repetition maximum) was assessed. Venous blood samples were collected at baseline and after 6 months of training in all patients for the analysis of markers of renal function and integrity, as well as for the determination of the inflammatory profile. Statistical significances were adopted with P < 0.05. RESULTS Both training therapies attenuated the decline of GFR (P < 0.05). The majority of CTL patients declined to stage 3 CKD (88.5%), whereas fewer incidents were noted with RT (25.7%) and RT + BFR (17.1%). Improved uremic parameters as well as inflammation (IL-6, IL-10, IL-15, IL-17a, IL-18, and TNF-α) and klotho-FGF23 axis in RT and RT + BFR (P < 0.05) were observed. Monocyte chemoattractant protein 1 was not changed (P > 0.05) but presented a large effect size (Cohen's d), demonstrating a propensity for improvement. CONCLUSION Six months of periodized RT with and without BFR in patients with stage 2 CKD attenuated the progression of the disease by maintaining GFR, improving uremic parameters, cytokine profile regulation, and klotho-FGF23 axis.
Collapse
Affiliation(s)
- Hugo Luca Corrêa
- Graduate Program in Physical Education, Catholic University of Brasilia, Brasilia, BRAZIL
| | | | - Lysleine Alves Deus
- Graduate Program in Physical Education, Catholic University of Brasilia, Brasilia, BRAZIL
| | - Michel Kendy Souza
- Department of Nephrology, Federal University of São Paulo, São Paulo, BRAZIL
| | - Anderson Sola Haro
- Department of Nephrology, Federal University of São Paulo, São Paulo, BRAZIL
| | - Fernando Costa
- Department of Nephrology, Federal University of São Paulo, São Paulo, BRAZIL
| | - Victor Lopes Silva
- Graduate Program in Physical Education, Catholic University of Brasilia, Brasilia, BRAZIL
| | | | - Milton Rocha Moraes
- Graduate Program in Physical Education, Catholic University of Brasilia, Brasilia, BRAZIL
| | - Herbert Gustavo Simões
- Graduate Program in Physical Education, Catholic University of Brasilia, Brasilia, BRAZIL
| | | | - Jonato Prestes
- Graduate Program in Physical Education, Catholic University of Brasilia, Brasilia, BRAZIL
| | - Thiago Santos Rosa
- Graduate Program in Physical Education, Catholic University of Brasilia, Brasilia, BRAZIL
| |
Collapse
|
23
|
Carino M, Elia Y, Sellers E, Curtis J, McGavock J, Scholey J, Hamilton J, Clarson C, Pinto T, Hadjiyannakis S, Mertens L, Samaan MC, Ho J, Nour M, Panagiotopoulos C, Jetha M, Gabbs M, Mahmud FH, Wicklow B, Dart A. Comparison of Clinical and Social Characteristics of Canadian Youth Living With Type 1 and Type 2 Diabetes. Can J Diabetes 2021; 45:428-435. [PMID: 33714663 DOI: 10.1016/j.jcjd.2021.01.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 01/11/2021] [Accepted: 01/16/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVES Our aim in this study was to describe the clinical and social characteristics of 2 Canadian cohorts of adolescents with diabetes. METHODS Participants from the Improving renal Complications in Adolescents with type 2 diabetes through REsearch (iCARE) study (n=322) and the Early Determinants of Cardio-Renal Disease in Youth With Type 1 Diabetes (n=199) study were compared. RESULTS Adolescents were 10 to 18 years of age (mean ± standard deviation: 14.8±2.4 years). The T2DM cohort had a shorter duration of diabetes. Both groups had glycated hemoglobin levels above target. The type 2 diabetes (T2D) cohort was comprised of predominantly Indigenous youth. The type 1 diabetes (T1D) cohort was 58.3% European/Caucasian, with a high proportion (41.7%) of visible minority groups (Afro-Caribbean, Asian/Pacific Islander, Hispanic). The prevalence of obesity, hypertension, left ventricular hypertrophy, albuminuria and hyperfiltration was higher in the T2D cohort. The T1D cohort was more socially and economically advantaged in all 4 dimensions of health inequality. CONCLUSIONS There are significant differences in clinical and social characteristics of adolescents with T2D and T1D in Canada. Both have inadequate glycemic control with evidence of onset and progression of diabetes-related complications.
Collapse
Affiliation(s)
- Marylin Carino
- Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Yesmino Elia
- Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada; Can-SOLVE CKD SPOR Network, Canada
| | - Elizabeth Sellers
- Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada; Department of Pediatrics and Child Health, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Jacqueline Curtis
- Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Jon McGavock
- Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada; Department of Pediatrics and Child Health, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - James Scholey
- Can-SOLVE CKD SPOR Network, Canada; Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Jill Hamilton
- Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Cheril Clarson
- Department of Pediatrics, University of Western Ontario, Western University, London, Ontario, Canada
| | - Teresa Pinto
- Department of Pediatrics, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Stasia Hadjiyannakis
- Department of Pediatrics, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Luc Mertens
- Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - M Constantine Samaan
- Department of Pediatrics, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Josephine Ho
- Department of Paediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Munier Nour
- Department of Pediatrics, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Constadina Panagiotopoulos
- Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mary Jetha
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Melissa Gabbs
- Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Farid H Mahmud
- Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada; Can-SOLVE CKD SPOR Network, Canada
| | - Brandy Wicklow
- Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada; Department of Pediatrics and Child Health, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada; Can-SOLVE CKD SPOR Network, Canada
| | - Allison Dart
- Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada; Department of Pediatrics and Child Health, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada; Can-SOLVE CKD SPOR Network, Canada.
| |
Collapse
|
24
|
Benoit SW, Kathman T, Patel J, Stegman M, Cobb C, Hoehn J, Devarajan P, Nehus EJ. GFR Estimation After Cystatin C Reference Material Change. Kidney Int Rep 2020; 6:429-436. [PMID: 33615068 PMCID: PMC7879112 DOI: 10.1016/j.ekir.2020.11.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 11/29/2022] Open
Abstract
Introduction Glomerular filtration rate (GFR) is routinely estimated with cystatin C. In June 2010, the International Federation of Clinical Chemistry (IFCC) released a certified cystatin C reference material (ERM-DA471/IFCC), and new cystatin C glomerular filtration rate estimation (eGFR) equations were developed with the IFCC standard. Early in 2018, Siemens discontinued their nonstandardized cystatin C reagent kits and replaced them with IFCC-calibrated kits in the US market. The aim of the current study was to assess the effect of IFCC calibration on cystatin C values and corresponding GFR estimations. Methods Cystatin C concentration was measured in 81 pediatric patients using a plasma sample from their nuclear GFR measurement with 99mTc-diethylenetriaminepentaaccetic acid. Calibration curves were generated using Siemens nonstandardized and IFCC-standardized kits to measure paired cystatin C concentrations in each sample. GFR-estimating equations using pre-IFCC and IFCC cystatin C values were compared using Bland-Altman analyses. Results The IFCC-standardized assay resulted in a mean increase in the measured cystatin C value of 24%. Estimating equations consistently overestimated GFR prior to IFCC standardization. Following incorporation of the IFCC standard, the Full Age Spectrum equation demonstrated the best overall performance, whereas the Chronic Kidney Disease in Children (CKiD) equation was more accurate in children with decreased GFR. Conclusion Incorporation of the IFCC standard significantly increased cystatin C values and affected the performance of GFR estimating equations. Clinical laboratories and providers may need to update the equation used for cystatin C-based estimation of GFR following adoption of the IFCC reference standard.
Collapse
Affiliation(s)
- Stefanie W Benoit
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio, USA
| | - Thelma Kathman
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Jay Patel
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Melinda Stegman
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Cristina Cobb
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Jonathan Hoehn
- Department of Emergency Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Prasad Devarajan
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio, USA
| | - Edward J Nehus
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio, USA
| |
Collapse
|
25
|
Effect of Cystatin C on Vancomycin Clearance Estimation in Critically Ill Children Using a Population Pharmacokinetic Modeling Approach. Ther Drug Monit 2020; 42:848-855. [PMID: 32947559 DOI: 10.1097/ftd.0000000000000796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Vancomycin is eliminated by glomerular filtration, but current approaches to estimate kidney function in children are unreliable. The authors sought to compare the suitability of cystatin C (CysC)-based glomerular filtration rate equations with the most commonly used creatinine-based equation, bedside Schwartz, to estimate vancomycin clearance (CL). METHODS This prospective observational study enrolled critically ill patients (2-18 years) receiving intravenous vancomycin at the Children's Hospital of Philadelphia during December 2015-November 2017. Vancomycin levels were collected during clinical care and at 3 times during a single dosing interval. Plasma CysC was measured within 24 hours before intravenous vancomycin (baseline) initiation or immediately after enrollment and along with the third pharmacokinetic sample. Nonlinear mixed effects modeling was performed using NONMEM software. Covariate selection was used to test model fit with inclusion of the estimated glomerular filtration rate (eGFR) on CL using bedside Schwartz versus various published CysC-based equations. RESULTS In total, 83 vancomycin levels were obtained from 20 children. The median age was 12.7 years; 6 patients were women. A 1-compartment model best described the data; CL was allometrically scaled to 0.75. During covariate selection, inclusion of the eGFR calculated using a CysC-based equation significantly improved model fit [reduction in objective function value (OFV) range: -17.191 to -18.704] than bedside Schwartz ([INCREMENT]OFV -12.820). Including the full age spectrum equation, an eGFR equation based on both creatinine and CysC, led to the largest OFV reduction (-22.913); female sex was also a significant covariate of CL in the model. Final model pharmacokinetic indices were CL = 0.29 L/h/kg and volume of distribution = 0.48 L/kg. CONCLUSIONS CysC-based equations help better estimate vancomycin CL than bedside Schwartz in critically ill children.
Collapse
|
26
|
Obeid S, Yousif N, Davies A, Loretz R, Saleh L, Niederseer D, Noor HA, Amin H, Mach F, Gencer B, Räber L, Windecker S, Templin C, Nanchen D, Rodondi N, Muller O, Matter CM, von Eckardstein A, Lüscher TF. Prognostic role of plasma galectin-3 levels in acute coronary syndrome. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2020; 9:869-878. [DOI: 10.1177/2048872620974612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Aim:
Cystatin C, neutrophil gelatinase-associated lipocalin and galectin-3 have emerged as biomarker candidates to predict cardiovascular outcomes and mortality in the general population as well as in patients with coronary artery or renal disease. However, their predictive role and clinical utility in patients with acute coronary syndromes alone or in combination beyond currently used risk scores remains to be determined.
Methods and results:
Cystatin C, neutrophil gelatinase-associated lipocalin, and galectin-3 were measured in plasmas of 1832 patients at the time of presentation with acute coronary syndromes requiring percutaneous coronary intervention or coronary artery bypass grafting. The primary outcomes were major adverse cardiac and cerebrovascular events (defined as the composite of all-cause mortality, cerebrovascular events, any repeat revascularization or myocardial infarction) and all-cause mortality after 1 year and occurred in 192 (10.5%) and 78 (4.3%) of patients, respectively. All three biomarkers were increased in those with major adverse cardiac and cerebrovascular events compared with those without (p<0.001). However, only galectin-3 (all-cause mortality: hazard ratio=1.027 (95% confidence interval (1.011–1.043); p=0.001), major adverse cardiac and cerebrovascular events: hazard ratio=1.025 (95% confidence interval (1.012–1.037); p<0.001)) but not cystatin C nor neutrophil gelatinase-associated lipocalin emerged as independent predictors of both major adverse cardiac and cerebrovascular events and death. The risks were particularly high in the highest quartile of galectin-3. The integration of galectin-3 into the global registry of acute coronary events (GRACE) score improved the prediction of major adverse cardiac and cerebrovascular events and all-cause mortality significantly. The areas under the receiver operator characteristics curves increased from 0.6701 to 0.6932 for major adverse cardiac and cerebrovascular events (p=0.0474) and from 0.804 to 0.8199 for all-cause mortality (p=0.0197). Finally, we applied net reclassification improvement index using different cut-offs for major adverse cardiac and cerebrovascular events which showed negative results (for the cut-offs of 5% and 15%, net reclassification improvement index 0.028, p=0.586, for the cut-offs of 10% and 20%, net reclassification improvement index 0.072, p=0.1132 and for the cut-offs of 10% and 30% the net reclassification improvement index is 0.0843, p=0.077).
Conclusion:
In acute coronary syndromes patients, galectin-3 has moderate prognostic accuracy, provides statistically significant incremental value in some, but not all models, and that the magnitude of any improvement would seem of questionable clinical value.
Collapse
Affiliation(s)
- Slayman Obeid
- Department of Cardiology, University Hospital Zurich, Switzerland
| | - Nooraldaem Yousif
- Department of Cardiology, University Hospital Zurich, Switzerland
- Mohammed Bin Khalifa Cardiac Centre, Kingdom of Bahrain
| | - Allan Davies
- Royal Brompton and Harefield Hospitals and Imperial College, UK
| | - Ruben Loretz
- Department of Cardiology, University Hospital Zurich, Switzerland
| | - Lanja Saleh
- Institute of Clinical Chemistry, University Hospital Zurich, Switzerland
| | - David Niederseer
- Department of Cardiology, University Hospital Zurich, Switzerland
| | - Husam A Noor
- Mohammed Bin Khalifa Cardiac Centre, Kingdom of Bahrain
| | - Haitham Amin
- Mohammed Bin Khalifa Cardiac Centre, Kingdom of Bahrain
| | - François Mach
- Department of Cardiology, Hospital Universitaire de Geneve, Switzerland
| | - Baris Gencer
- Department of Cardiology, Hospital Universitaire de Geneve, Switzerland
| | - Lorenz Räber
- Department of Cardiology, University Hospital Bern, Switzerland
| | | | | | - David Nanchen
- Department of Ambulatory Care and Community Medicine, University of Lausanne, Switzerland
| | - Nicolas Rodondi
- Department of General Medicine, University Hospital Bern, Switzerland
- Institute of Primary Health Care (BIHAM), University of Bern, Switzerland
| | - Olivier Muller
- Department of Cardiology, Centre Hospitalier Universitaire Vaudois, Switzerland
| | - Christian M Matter
- Department of Cardiology, University Hospital Zurich, Switzerland
- Center for Molecular Cardiology, University of Zurich, Switzerland
| | | | - Thomas F Lüscher
- Royal Brompton and Harefield Hospitals and Imperial College, UK
- Center for Molecular Cardiology, University of Zurich, Switzerland
| |
Collapse
|
27
|
Mróz J, Białek Ł, Gozdowska J, Sadowska-Jakubowicz A, Czerwińska K, Durlik M. Formulas Estimating Glomerular Filtration Rate in the Evaluation of Living Kidney Donor Candidates: Comparison of Different Formulas With Scintigraphy-Measured Glomerular Filtration Rate. Transplant Proc 2020; 53:773-778. [PMID: 33248721 DOI: 10.1016/j.transproceed.2020.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/20/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Estimation of kidney function is crucial in the evaluation of living kidney donor candidates. Despite the multitude of glomerular filtration rate (GFR) formulas, no equation is universal, and none were validated in the population of kidney donors. Novel biomarkers, including beta trace protein (BTP) and cystatin C, are studied to help estimate GFR and improve the safe qualification of living kidney donors. AIM This study compares the accuracy of different formulas that estimate GFR with reference scintigraphy-measured GFR in the population of living kidney donor candidates. MATERIAL AND METHODS This study enrolled 30 healthy living kidney donor candidates. GFR was measured using the following 11 different formulas. For reference, GFR was assessed using 99m-Technetium-diethylenetriaminepentaacetic acid. RESULTS The accuracy of estimation was generally low in all formulas. The strongest correlation between measured GFR (mGFR) and estimated GFR (eGFR) was achieved by the Nankivell formula (R = 0.47, P = .009); however, in the group of patients with a body mass index of >25 kg/m2, only the equations based on BTP had a statistically significant correlation with mGFR: White (R = 0.59; P = .016) and Poge (R = 0.53; P = .035). Bland-Altman plots revealed wide limits of agreement between eGFRs and mGFR in all groups of patients. CONCLUSION In living kidney donor candidates, GFR estimation formulas should be chosen individually. White formula, which is based on BTP, may be a promising tool in estimating GFR in overweight potential living kidney donor candidates. More than 1 formula and personalized choice of GFR estimation method regarding the given patient should be performed in qualification of kidney donors.
Collapse
Affiliation(s)
- Julia Mróz
- Department of Transplantation Medicine, Nephrology and Internal Diseases, Medical University of Warsaw, Poland
| | - Łukasz Białek
- Department of Transplantation Medicine, Nephrology and Internal Diseases, Medical University of Warsaw, Poland
| | - Jolanta Gozdowska
- Department of Transplantation Medicine, Nephrology and Internal Diseases, Medical University of Warsaw, Poland.
| | - Anna Sadowska-Jakubowicz
- Department of Transplantation Medicine, Nephrology and Internal Diseases, Medical University of Warsaw, Poland
| | - Katarzyna Czerwińska
- Department of Transplantation Medicine, Nephrology and Internal Diseases, Medical University of Warsaw, Poland
| | - Magdalena Durlik
- Department of Transplantation Medicine, Nephrology and Internal Diseases, Medical University of Warsaw, Poland
| |
Collapse
|
28
|
Mohd Tahir NA, Mohd Saffian S, Islahudin FH, Abdul Gafor AH, Makmor-Bakry M. A Meta-Analysis on the Performance of Cystatin C- versus Creatinine-based eGFR Equations in Predicting Vancomycin Clearance. J Korean Med Sci 2020; 35:e306. [PMID: 32959542 PMCID: PMC7505726 DOI: 10.3346/jkms.2020.35.e306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 06/25/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The objective of this study was to compare the performance of cystatin C- and creatinine-based estimated glomerular filtration rate (eGFR) equations in predicting the clearance of vancomycin. METHODS MEDLINE and Embase databases were searched from inception up to September 2019 to identify all studies that compared the predictive performance of cystatin C- and/or creatinine-based eGFR in predicting the clearance of vancomycin. The prediction errors (PEs) (the value of eGFR equations minus vancomycin clearance) were quantified for each equation and were pooled using a random-effects model. The root mean squared errors were also quantified to provide a metric for imprecision. RESULTS This meta-analysis included evaluations of seven different cystatin C- and creatinine-based eGFR equations in total from 26 studies and 1,234 patients. The mean PE (MPE) for cystatin C-based eGFR was 4.378 mL min-1 (95% confidence interval [CI], -29.425, 38.181), while the creatinine-based eGFR provided an MPE of 27.617 mL min-1 (95% CI, 8.675, 46.560) in predicting clearance of vancomycin. This indicates the presence of unbiased results in vancomycin clearance prediction by the cystatin C-based eGFR equations. Meanwhile, creatinine-based eGFR equations demonstrated a statistically significant positive bias in vancomycin clearance prediction. CONCLUSION Cystatin C-based eGFR equations are better than creatinine-based eGFR equations in predicting the clearance of vancomycin. This suggests that utilising cystatin C-based eGFR equations could result in better accuracy and precision to predict vancomycin pharmacokinetic parameters.
Collapse
Affiliation(s)
| | | | | | - Abdul Halim Abdul Gafor
- Nephrology Unit, Department of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Cheras, Malaysia
| | - Mohd Makmor-Bakry
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
| |
Collapse
|
29
|
Lin YT, Salihovic S, Fall T, Hammar U, Ingelsson E, Ärnlöv J, Lind L, Sundström J. Global Plasma Metabolomics to Identify Potential Biomarkers of Blood Pressure Progression. Arterioscler Thromb Vasc Biol 2020; 40:e227-e237. [DOI: 10.1161/atvbaha.120.314356] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objective:
The pathophysiology of hypertension remains incompletely understood. We investigated associations of circulating metabolites with longitudinal blood pressure (BP) changes in the Prospective Investigation of the Vasculature in Uppsala Seniors cohort and validated the findings in the Uppsala Longitudinal Study of Adult Men cohort.
Approach and Results:
Circulating metabolite levels were assessed with liquid- and gas-chromatography coupled to mass spectrometry among persons without BP-lowering medication at baseline. We studied associations of baseline levels of metabolites with changes in BP levels and the clinical BP stage between baseline and a follow-up examination 5 years later. In the discovery cohort, we investigated 504 individuals that contributed with 757 observations of paired BP measurements. The mean baseline systolic and diastolic BPs were 144 (19.7)/76 (9.7) mm Hg, and change in systolic and diastolic BPs were 3.7 (15.8)/−0.5 (8.6) mm Hg over 5 years. The metabolites associated with diastolic BP change were ceramide, triacylglycerol, total glycerolipids, oleic acid, and cholesterylester. No associations with longitudinal changes in systolic BP or BP stage were observed. Metabolites with similar structures to the 5 top findings in the discovery cohort were investigated in the validation cohort. Diacylglycerol (36:2) and monoacylglycerol (18:0), 2 glycerolipids, were associated with diastolic BP change in the validation cohort.
Conclusions:
Circulating baseline levels of ceramide, triacylglycerol, total glycerolipids, and oleic acid were positively associated with longitudinal diastolic BP change, whereas cholesterylester levels were inversely associated with longitudinal diastolic BP change. Two glycerolipids were validated in an independent cohort. These metabolites may point towards pathophysiological pathways of hypertension.
Collapse
Affiliation(s)
- Yi-Ting Lin
- From the Department of Medical Sciences, Uppsala University, Sweden (Y.-T.L., S.S., T.F., U.H., E.I., L.L., J.S.)
- Department of Family Medicine, Kaohsiung Medical University Hospital (Y.-T.L.), Kaohsiung Medical University, Taiwan
- Faculty of Medicine, College of Medicine (Y.-T.L.), Kaohsiung Medical University, Taiwan
| | - Samira Salihovic
- From the Department of Medical Sciences, Uppsala University, Sweden (Y.-T.L., S.S., T.F., U.H., E.I., L.L., J.S.)
- School of Medical Sciences (S.S.), Örebro University, Sweden
- School of Science and Technology (S.S.), Örebro University, Sweden
| | - Tove Fall
- From the Department of Medical Sciences, Uppsala University, Sweden (Y.-T.L., S.S., T.F., U.H., E.I., L.L., J.S.)
| | - Ulf Hammar
- From the Department of Medical Sciences, Uppsala University, Sweden (Y.-T.L., S.S., T.F., U.H., E.I., L.L., J.S.)
| | - Erik Ingelsson
- From the Department of Medical Sciences, Uppsala University, Sweden (Y.-T.L., S.S., T.F., U.H., E.I., L.L., J.S.)
- Division of Cardiovascular Medicine, Department of Medicine (E.I.), Stanford University School of Medicine, CA
- Stanford Cardiovascular Institute (E.I.), Stanford University School of Medicine, CA
- Stanford Diabetes Research Center (E.I.), Stanford University School of Medicine, CA
| | - Johan Ärnlöv
- Division of Family Medicine and Primary Care, Department of Neurobiology, Care Science and Society, Karolinska Institutet, Huddinge, Sweden (J.Ä.)
- School of Health and Social Studies, Dalarna University, Falun, Sweden (J.Ä.)
| | - Lars Lind
- From the Department of Medical Sciences, Uppsala University, Sweden (Y.-T.L., S.S., T.F., U.H., E.I., L.L., J.S.)
| | - Johan Sundström
- From the Department of Medical Sciences, Uppsala University, Sweden (Y.-T.L., S.S., T.F., U.H., E.I., L.L., J.S.)
- The George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia (J.S.)
| |
Collapse
|
30
|
Grubb A. Shrunken pore syndrome - a common kidney disorder with high mortality. Diagnosis, prevalence, pathophysiology and treatment options. Clin Biochem 2020; 83:12-20. [PMID: 32544475 DOI: 10.1016/j.clinbiochem.2020.06.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/03/2020] [Accepted: 06/03/2020] [Indexed: 02/06/2023]
Abstract
Invasive studies show that the glomerular sieving coefficients for 5-30 kDa plasma proteins in the human kidney may be selectively reduced compared to those for small molecules < 0.9 kDa, commonly used to measure glomerular filtration rate (GFR). Identification of this pathophysiological state, called shrunken pore syndrome (SPS), can easily and non-invasively be done by comparing estimations of GFR using cystatin C (13.3 kDa) and creatinine (0.113 kDa). SPS is present if the estimate of GFR using cystatin C is lower than 60 or 70% of the estimate using creatinine in the absence of non-renal influences on cystatin C or creatinine. All studies of SPS show that the 3- or 5-year mortality is strongly increased and high hazard ratios for mortality associated with SPS have been observed for many different patient cohorts, including cohorts with normal measured GFR, no albuminuria and no diagnosis. The prevalence of SPS in the cohorts so far investigated is between 0.2 and 36%. Proteome studies of SPS demonstrate that the high mortality associated with the syndrome might be caused by the accumulation of 10-30 kDa signalling proteins promoting development of atherosclerosis and thus suggesting use of monoclonal antibodies to reduce the levels of the most detrimental signalling proteins as a treatment option. The KDIGO recommendations for classification of chronic kidney disease (CKD) comprise determination, or estimation, of GFR and analysis of albuminuria and therefore cannot identify a large fraction of the patients with SPS. The high prevalence and mortality of SPS and the possible treatment options strongly suggest that the KDIGO recommendations should be expanded to include determination of cystatin C to be able to identify all patients with SPS.
Collapse
Affiliation(s)
- Anders Grubb
- Department of Clinical Chemistry and Pharmacology, Institute of Laboratory Medicine, Lund University, S-22185 Lund, Sweden.
| |
Collapse
|
31
|
Plant-based diets, insulin sensitivity and inflammation in elderly men with chronic kidney disease. J Nephrol 2020; 33:1091-1101. [PMID: 32514991 PMCID: PMC7557485 DOI: 10.1007/s40620-020-00765-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/27/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND In persons with CKD, adherence to plant-based diets is associated with lower risk of CKD progression and death, but underlying mechanisms are poorly characterized. We here explore associations between adherence to plant-based diets and measures of insulin sensitivity and inflammation in men with CKD stages 3-5. METHODS Cross-sectional study including 418 men free from diabetes, aged 70-71 years and with cystatin-C estimated glomerular filtration rate (eGFR) <60 mL/min/1.73m2 and not receiving kidney-specific dietetic advice. Information from 7-day food records was used to evaluate the adherence to a plant-based diet index (PBDi), which scores positively the intake of plant-foods and negatively animal-foods. Insulin sensitivity and glucose disposal rate were assessed with the gold-standard hyperinsulinemic euglycemic glucose clamp technique. Inflammation was evaluated by serum concentrations of C-reactive protein (CRP) and interleukin (IL)-6. Associations were explored through linear regression and restricted cubic splines. RESULTS The majority of men had CKD stage 3a. Hypertension and cardiovascular disease were the most common comorbidities. The median PBDi was 38 (range 14-55). Across higher quintiles of PBDi (i.e. higher adherence), participants were less often smokers, consumed less alcohol, had lower BMI and higher eGFR (P for trend <0.05 for all). Across higher PBDi quintiles, patients exhibited higher insulin sensitivity and lower inflammation (P for trend <0.05). After adjustment for eGFR, lifestyle factors, BMI, comorbidities and energy intake, a higher PBDi score remained associated with higher glucose disposal rate and insulin sensitivity as well as with lower levels of IL-6 and CRP. CONCLUSION In elderly men with non-dialysis CKD stages 3-5, adherence to a plant-based diet was associated with higher insulin sensitivity and lower inflammation, supporting a possible role of plant-based diets in the prevention of metabolic complications of CKD.
Collapse
|
32
|
Schwartz GJ, Cox C, Seegmiller JC, Maier PS, DiManno D, Furth SL, Warady BA, Munoz A. Recalibration of cystatin C using standardized material in Siemens nephelometers. Pediatr Nephrol 2020; 35:279-285. [PMID: 31680199 PMCID: PMC7249730 DOI: 10.1007/s00467-019-04389-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/06/2019] [Accepted: 09/27/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Cystatin C is a key GFR biomarker. Recently, Siemens recalibrated the assay based on certified reference material ERM-DA471/IFCC. The NIH-funded longitudinal chronic kidney disease in children (CKiD) study has > 3000 cystatin C measurements based on a pre-IFCC calibrator provided by Siemens. Since cystatin C values for CKiD are now standardized to IFCC certified reference material, it is important to relate the IFCC-calibrated results to the previous values so that there are no discontinuous results. METHODS We diluted cystatin C ERM-DA471/IFCC (5.48 mg/L) into buffer and compared results with predicted ones. We then updated the cystatin C application on our BN II nephelometer to provide results based on pre-IFCC and IFCC calibrations of CKiD specimens simultaneously. We assayed 51 previously analyzed sera and 62 fresh additional specimens. RESULTS The predicted concentrations from the IFCC standard were consistently 17% higher than the measured values using the pre-IFCC calibration (y = 1.1686x). Similarly, the re-run and fresh sample concentrations were 17% higher via the IFCC calibration than by the pre-IFCC calibration (y = 1.168x). There was very high reliability in the measurements using the previous calibration for re-run specimens (0.99) and for 33 pristine specimens using IFCC calibration (0.99). CONCLUSIONS We confirm the recalibration proposed by Siemens. To convert pre-IFCC results to IFCC-calibrated concentrations, the value is multiplied by 1.17. Conversely, one divides IFCC-calibrated results by 1.17 to estimate GFR via previously published pre-IFCC CKiD eGFR equations. For older adolescents, cystatin C has already been standardized and can be directly applied to the CKD-EPI equations.
Collapse
Affiliation(s)
| | | | | | | | - Donna DiManno
- University of Rochester Medical Center, Rochester, NY
| | - Sue L Furth
- Children’s Hospital of Philadelphia, Philadelphia, PA
| | | | | |
Collapse
|
33
|
Xie P, Li HL, Huang JM, Wei LG. Validation of the full-age spectrum equation in the approximation of glomerular filtration rate in Chinese patients with chronic kidney disease. Ren Fail 2020; 41:467-472. [PMID: 31162994 PMCID: PMC6571547 DOI: 10.1080/0886022x.2019.1620773] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2022] Open
Abstract
Introduction: To investigate the validity of the full age spectrum (FAS) equation in determining the glomerular filtration rate (GFR) in Chinese patients with chronic kidney disease (CKD) and to compare the performance of FAS equation and the technetium-99m-diethylene triamine pentaacetic acid (Tc-99m-DTPA) renal dynamic imaging method. Methods: The GFR was determined by three methods in the same day: (a) Tc-99m-DTPA dual plasma sample clearance method (mGFR); (b) FAS equation (eGFR1); (c) Tc-99m-DTPA renal dynamic imaging method (eGFR2). The mGFR was used as the reference standard. The Bland-Altman method, concordance correlation coefficient and regression equation were applied to evaluate the validity of the estimated glomerular filtration rate (eGFR). The bias, precision and accuracy were analyzed to compare the performances of eGFR1 and eGFR2. Results: A total of 162 subjects were enrolled in this study. The eGFR1 was correlated well with mGFR (concordance correlation coefficient was 0.896, p < 0.0001) and the regression equation was mGFR = -0.374 + 1.029eGFR1 (p < 0001). The Bland-Altman analysis proved good agreement between the eGFR1 and mGFR. In comparison with eGFR2, the eGFR1 showed better performance on bias (-1.22 vs. 8.92, p < 0001), precision (15.69 vs. 18.36, p = 0.047) and 30% accuracy (75.31% vs. 59.26%, p = 0.0009) in all participants. Conclusions: The FAS equation is valid in determining the glomerular filtration rate in Chinese patients with chronic kidney disease. The Tc-99m-DTPA renal dynamic imaging method is less accurate than the FAS equation and cannot be employed as the reference method in assessing the performance of FAS equation.
Collapse
Affiliation(s)
- Peng Xie
- a Department of Nuclear Medicine , The Third Hospital, Hebei Medical University , Hebei , People's Republic of China
| | - Huan-Li Li
- b Department of Ophthalmology , The Hebei General Hospital , Hebei , People's Republic of China
| | - Jian-Min Huang
- a Department of Nuclear Medicine , The Third Hospital, Hebei Medical University , Hebei , People's Republic of China
| | - Ling-Ge Wei
- a Department of Nuclear Medicine , The Third Hospital, Hebei Medical University , Hebei , People's Republic of China
| |
Collapse
|
34
|
Hu C, Li D, Yin W, Zuo X. Evaluation of cystatin C-derived glomerular filtration rate equations in Chinese population. Scandinavian Journal of Clinical and Laboratory Investigation 2019; 79:629-634. [PMID: 31709845 DOI: 10.1080/00365513.2019.1689575] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
ABTRACTGlomerular filtration rate (GFR) has become the best indicator for assessing renal function. This study aims to validate the existing cystatin C (CysC)-derived estimated glomerular filtration rate (eGFR) equations in Chinese patients to explore whether the reported CysC-derived eGFR formulas could be applied to the Chinese population. This study validated the equations in a population totaling 1816 inpatients. We calculated eGFR by different CysC-derived equations, then compared with the mGFR. Equation performance was assessed by bias (mean difference between mGFR and eGFR), precision (inter-quartile range of difference) and accuracy (mainly, accuracy within 30% [P30]). All equations expressed poor performance in dialysis patients (n = 345), and the performance for non-dialysis patients (n = 1471) were significantly greater than that in dialysis patients. Feng and Pei equations had higher P30 (50.82% and 49.73%, respectively) than the widely used CKD-EPICysC (41.10%) and MacIsaac equations (48.23%), and the distribution of eGFR values is more similar to the distribution of mGFR in non-dialysis patients. Similar trends showed in mGFR, sex, age, and BMI subgroups. However, no equation met the guideline standard of P30 ≥ 75%. Our results suggest that the published CysC-based eGFR equations are not suitable for dialysis patients, and the accuracy of equations for non-dialysis patients significantly better than the dialysis ones. Moreover, Feng and Pei equation showed better performance in non-dialysis patients.
Collapse
Affiliation(s)
- Can Hu
- Department of Pharmacy, Third Xiangya Hospital, Central South University, Changsha, China
| | - Daiyang Li
- Department of Pharmacy, Third Xiangya Hospital, Central South University, Changsha, China
| | - Wenjun Yin
- Department of Pharmacy, Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiaocong Zuo
- Department of Pharmacy, Third Xiangya Hospital, Central South University, Changsha, China.,Center of Clinical Pharmacology, Third Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
35
|
Alshammari F, Alhazaa S, Althemery A, Alsabaan F, AlGosaibi A, Alshammari M, Aldabies A, Alfifi M. Prevalence of hypothyroidism among chronic kidney disease patients in security force hospital (SFH) in Saudi Arabia. J Family Med Prim Care 2019; 8:3313-3317. [PMID: 31742161 PMCID: PMC6857355 DOI: 10.4103/jfmpc.jfmpc_641_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 08/20/2019] [Accepted: 09/03/2019] [Indexed: 12/21/2022] Open
Abstract
Introduction: Impairment in kidney function leads to disturbed thyroid physiology. All levels of the hypothalamic-pituitary-thyroid axis may be involved, including alterations in hormone production, distribution, and excretion, and even CKD progress with hypothyroidism. Aim of Work: To assess the prevalence of hypothyroidism among chronic kidney disease patients. Materials and Methods: A cross-sectional analysis was conducted in the nephrology department of security forces hospital from January 2015 to February 2018. Biochemical tests (includes blood urea, serum creatinine, PTH, total T4, TSH) were carried out to all participants. Results: Out of 255 CKD patients in the present study, 166 patients had no hypothyroidism, 43 had subclinical hypothyroidism, and 46 had hypothyroidism. The percentage of hypothyroidism among CKD patients was 34.9%, including dialysis patients and 17.66% after exclusion. Out of 24 peritoneal dialysis patients in the current study (P = 0.03), 7 had subclinical hypothyroidism and another 7 had hypothyroidism. In addition, out of 139 hemodialysis patients (P = 0.02), 20 patients had subclinical hypothyroidism and 18 had hypothyroidism. The majority (67.36%) of CKD patients were in CKD stage 5 and had no hypothyroidism (45.10%). Only 29 (11.37%) patients in CKD stage 5 had hypothyroidism and 28 (10.89%) patients had subclinical hypothyroidism. T4 was higher in nondialysis patients, whereas TSH and PTH were higher in dialysis patients. Conclusion: The prevalence of hypothyroidism among chronic kidney disease patients was high and increased with the decrease in estimated GFR.
Collapse
Affiliation(s)
- Faisal Alshammari
- Department of Internal Medicine, Prince Mohammed Medical City, Aljouf, Saudi Arabia
| | - Sultan Alhazaa
- Department of Nephrology, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Abdullah Althemery
- Department of Clinical Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia
| | - Fahad Alsabaan
- Department of Endocrinology, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Abdulelah AlGosaibi
- Department of Internal Medicine, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Manal Alshammari
- Department of Internal Medicine, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Ali Aldabies
- Department of Internal Medicine, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Mohammad Alfifi
- Pulmonary and Critical Care Department, Security Forces Hospital, Riyadh, Saudi Arabia
| |
Collapse
|
36
|
Lin YT, Fall T, Hammar U, Gustafsson S, Ingelsson E, Ärnlöv J, Lind L, Engström G, Sundström J. Proteomic Analysis of Longitudinal Changes in Blood Pressure. J Clin Med 2019; 8:jcm8101585. [PMID: 31581667 PMCID: PMC6832911 DOI: 10.3390/jcm8101585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/16/2019] [Accepted: 09/30/2019] [Indexed: 01/01/2023] Open
Abstract
Hypertension is the leading risk factor for premature death worldwide. The identification of modifiable causes of hypertension remains an imperative task. We aimed to investigate associations between 79 proteins implicated in cardiovascular disease and longitudinal blood pressure (BP) changes in three Swedish prospective cohorts. In a discovery phase, we investigated associations between baseline circulating protein levels assessed with a proximity extension assay and BP stage progression at follow-up 5 years later among persons without BP-lowering drugs at baseline in two independent community-based cohorts from the Prospective Investigation of the Vasculature in Uppsala Seniors study (PIVUS) and the Uppsala Longitudinal Study of Adult Men (ULSAM). We used an independent cohort, the Malmö Diet and Cancer Study (MDC), for replication. The primary outcome of BP stage progression was defined as per the 2017 AHA/ACC (American Heart Association/ American College of Cardiology) Guideline BP categories. We also investigated associations of protein levels with changes in BP on a continuous scale, and meta-analyzed all three cohorts. Levels of renin were associated with BP stage progression with a 5% false discovery rate (FDR) in the ULSAM (n = 238) and PIVUS (n = 566) cohorts, but we could not replicate this association in the MDC cohort (n = 2659). The association in the discovery cohorts was modest, with an odds ratio for BP stage progression over 5 years of 1.33 (95% confidence interval 1.14 to 1.56) per standard deviation of baseline renin. In conclusion, we could not find any novel robust associations with longitudinal BP increase in a proximity extension assay-based proteomics investigation in three cohorts.
Collapse
Affiliation(s)
- Yi-Ting Lin
- Department of Medical Sciences, Uppsala University, 75236 Uppsala, Sweden.
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, 807 Kaohsiung City, Taiwan.
| | - Tove Fall
- Department of Medical Sciences, Uppsala University, 75236 Uppsala, Sweden.
| | - Ulf Hammar
- Department of Medical Sciences, Uppsala University, 75236 Uppsala, Sweden.
| | - Stefan Gustafsson
- Department of Medical Sciences, Uppsala University, 75236 Uppsala, Sweden.
| | - Erik Ingelsson
- Department of Medical Sciences, Uppsala University, 75236 Uppsala, Sweden.
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
- Stanford Cardiovascular Institute, Stanford University, Stanford, CA 94305, USA.
- Stanford Diabetes Research Center, Stanford University, Stanford, CA 94305, USA.
| | - Johan Ärnlöv
- Division of Family Medicine and Primary Care, Department of Neurobiology, Care Science and Society, Karolinska Institutet, 14152 Huddinge, Sweden.
- School of Health and Social Studies, Dalarna University, 79131 Falun, Sweden.
| | - Lars Lind
- Department of Medical Sciences, Uppsala University, 75236 Uppsala, Sweden.
| | - Gunnar Engström
- Department of Clinical Sciences, Cardiovascular Epidemiology, Lund University, 21428 Malmö, Sweden.
| | - Johan Sundström
- Department of Medical Sciences, Uppsala University, 75236 Uppsala, Sweden.
- The George Institute for Global Health, University of New South Wales, Sydney 2042, Australia.
| |
Collapse
|
37
|
The impact of kidney dysfunction categorized by urinary to serum creatinine ratio on clinical outcomes in patients with heart failure. Heart Vessels 2019; 35:187-196. [PMID: 31332507 DOI: 10.1007/s00380-019-01472-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 07/12/2019] [Indexed: 10/26/2022]
Abstract
Kidney dysfunction (KD) is closely associated with poor clinical outcome in patients with heart failure (HF). KD is classified as intrinsic and pre-renal KD. However, the impact of each KD on the clinical outcome in patients with HF has not yet been fully elucidated. We measured the urinary to serum creatinine (UC/SC) ratio, a marker for intrinsic and pre-renal KD, in 1009 consecutive patients with HF at admission. There were 314 cardio-renal events including HF and advanced end-stage renal dysfunction during the median follow-up period of 1154 days. There were 63 (6%) patients with intrinsic KD (UC/SC ratio < 20), 118 (12%) patients with intermediate KD (UC/SC ratio 20-40), 607 (60%) patients with pre-renal KD (UC/SC ratio > 40), and 221 (22%) patients with no KD. Multivariate Cox's proportional hazard regression analysis demonstrated that intrinsic and intermediate KDs were significantly associated with poor clinical outcome. The prediction model for cardio-renal events was significantly improved by the addition of UC/SC ratio to the confounding risk factors. Subgroup analysis in patients with HF with severely reduced glomerular filtration rates showed that the prevalence rates of intrinsic, intermediate, and pre-renal KDs were 23%, 30%, and 47%, respectively. The cardio-renal event rate was the highest in the intrinsic KD group compared with that in the other groups. Intrinsic KD was closely associated with extremely poor clinical outcome in patients with HF. The UC/SC ratio could provide important clinical information for the treatment and management of KD in patients with HF.
Collapse
|
38
|
Lipcsey M, Aronsson A, Larsson A, Renlund H, Gedeborg R. Multivariable models using administrative data and biomarkers to adjust for case mix in the ICU. Acta Anaesthesiol Scand 2019; 63:751-760. [PMID: 30734281 DOI: 10.1111/aas.13338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/24/2018] [Accepted: 01/08/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Routinely collected laboratory biomarkers could improve control of confounding from disease severity in non-interventional studies of general intensive care unit (ICU) patients. Their ability to predict both short- and long-term mortality was evaluated. METHODS The performance of age, sex, Charlson co-morbidity index, and baseline values of ten predefined blood biomarkers as predictors of 30-day and 1-year mortality was evaluated in 5505 general ICU stays. RESULTS Regression models based on age, sex, Charlson index, and biomarkers were somewhat less accurate in predicting 30-day mortality (c-index 0.83, Brier score 0.27) compared to the SAPS II score (c-index = 0.88, Brier score = 0.09) and in predicting 1-year mortality (c-index = 0.82, Brier score = 0.31) compared to the SAPS II score (c-index = 0.85, Brier score = 0.13). Cystatin C improved predictive ability slightly compared to creatinine, but age and Charlson comorbidity index were more important predictors. Using multiple imputation to replace missing biomarker values notably improved predictive ability of the models. CONCLUSIONS Automatically collected baseline variables are almost as predictive of both short- and long-term mortality in general ICU patients, as the SAPS II score. This can facilitate internal control of confounding in non-interventional studies of mortality using administrative data.
Collapse
Affiliation(s)
- Miklos Lipcsey
- Hedenstierna laboratory, Section of Anaesthesiology and Intensive Care, Department of Surgical Sciences Uppsala University Uppsala Sweden
| | - Anna Aronsson
- Section of Anaesthesiology and Intensive Care, Department of Surgical Sciences Uppsala University Uppsala Sweden
| | - Anders Larsson
- Section of Clinical Chemistry, Department of Medical Sciences Uppsala University Uppsala Sweden
| | | | - Rolf Gedeborg
- Section of Anaesthesiology and Intensive Care, Department of Surgical Sciences Uppsala University Uppsala Sweden
| |
Collapse
|
39
|
Pelander L, Häggström J, Larsson A, Syme H, Elliott J, Heiene R, Ljungvall I. Comparison of the diagnostic value of symmetric dimethylarginine, cystatin C, and creatinine for detection of decreased glomerular filtration rate in dogs. J Vet Intern Med 2019; 33:630-639. [PMID: 30791142 PMCID: PMC6430914 DOI: 10.1111/jvim.15445] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 01/23/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Early detection of decreased glomerular filtration rate (GFR) in dogs is challenging. Current methods are insensitive and new biomarkers are required. OBJECTIVE To compare overall diagnostic performance of serum symmetric dimethylarginine (SDMA) and serum cystatin C to serum creatinine, for detection of decreased GFR in clinically stable dogs, with or without chronic kidney disease (CKD). ANIMALS Ninety-seven client-owned dogs: 67 dogs with a diagnosis or suspicion of CKD and 30 healthy dogs were prospectively included. METHODS Prospective diagnostic accuracy study. All dogs underwent physical examination, systemic arterial blood pressure measurement, urinalysis, hematology and blood biochemistry analysis, cardiac and urinary ultrasound examinations, and scintigraphy for estimation of glomerular filtration rate (mGFR). Frozen serum was used for batch analysis of SDMA and cystatin C. RESULTS The area under the curve of creatinine, SDMA, and cystatin C for detection of an mGFR <30.8 mL/min/L was 0.98 (95% confidence interval [CI], 0.93-1.0), 0.96 (95% CI, 0.91-0.99), and 0.87 (95% CI, 0.79-0.93), respectively. The sensitivity of both creatinine and SDMA at their prespecified cutoffs (115 μmol/L [1.3 mg/dL] and 14 μg/dL) for detection of an abnormal mGFR was 90%. The specificity was 90% for creatinine and 87% for SDMA. When adjusting the cutoff for cystatin C to correspond to a diagnostic sensitivity of 90% (0.49 mg/L), specificity was lower (72%) than that of creatinine and SDMA. CONCLUSIONS AND CLINICAL IMPORTANCE Overall diagnostic performance of creatinine and SDMA for detection of decreased mGFR was similar. Overall diagnostic performance of cystatin C was inferior to both creatinine and SDMA.
Collapse
Affiliation(s)
- Lena Pelander
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Jens Häggström
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Anders Larsson
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Harriet Syme
- Department of Clinical Science and Services, The Royal Veterinary College, Hertfordshire, United Kingdom
| | - Jonathan Elliott
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, London, United Kingdom
| | - Reidun Heiene
- ABC Dyreklinikk Lillehammer AS, Hamarvegen 68A, 26 13 Lillehammer, Norway
| | - Ingrid Ljungvall
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| |
Collapse
|
40
|
Benoit SW, Dixon BP, Goldstein SL, Bennett MR, Lane A, Lounder DT, Rotz SJ, Gloude NJ, Lake KE, Litts B, Davies SM. A novel strategy for identifying early acute kidney injury in pediatric hematopoietic stem cell transplantation. Bone Marrow Transplant 2019; 54:1453-1461. [PMID: 30700793 DOI: 10.1038/s41409-018-0428-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 11/07/2018] [Accepted: 12/09/2018] [Indexed: 01/09/2023]
Abstract
Acute kidney injury (AKI) is a common complication in pediatric hematopoietic stem cell transplantation (HSCT). Serum creatinine is an imprecise biomarker of AKI. We hypothesized that combining creatinine with serum cystatin C (cysC) and urinary neutrophil gelatinase-associated lipocalin (NGAL) more effectively characterizes AKI during the first 28 days of HSCT and better identifies patients at risk of adverse outcomes than creatinine alone. We prospectively assessed the type and severity of AKI in 80 consecutive allogeneic HSCT patients using weekly creatinine, cysC, and NGAL. We combined the biomarkers to define 7 Composite Types of AKI, including All Positive AKI (simultaneously detected creatinine, cysC, and NGAL AKI). Outcomes included renal replacement therapy and transplant-related mortality. In all, 75% of patients had AKI by at least one measure; 33% developed >1 type of AKI. Mild AKI often preceded Severe AKI. Patients with creatinine or NGAL AKI that were Severe or Repeated tended to have worse outcomes. The five patients with All Positive AKI had the highest rates of morbidity and mortality. AKI evaluation with creatinine, cysC, and NGAL provides a comprehensive profile of early AKI and narrowly identifies patients at highest risk of adverse outcomes, providing opportunities for early, impactful intervention.
Collapse
Affiliation(s)
- Stefanie W Benoit
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
| | - Bradley P Dixon
- Kidney Center at Children's Hospital Colorado Medical Center, Aurora, CO, USA.,Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Stuart L Goldstein
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Center for Acute Care Nephrology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Michael R Bennett
- Division of Nephrology & Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Adam Lane
- University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | - Seth J Rotz
- Department of Pediatric Hematology, Oncology, and Blood and Marrow Transplantation, Cleveland Clinic Foundation, Cleveland, OH, USA.,Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
| | - Nicholas J Gloude
- University of California San Diego, Rady Children's Hospital, San Diego, CA, USA
| | - Kelly E Lake
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Bridget Litts
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Stella M Davies
- University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| |
Collapse
|
41
|
Taylor VA, Kirby CL, Nehus EJ, Goebel J, Hooper DK. Composite Health Outcomes in Pediatric and Young Adult Kidney Transplant Recipients. J Pediatr 2019; 204:196-202. [PMID: 30274920 DOI: 10.1016/j.jpeds.2018.08.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/27/2018] [Accepted: 08/29/2018] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To assess composite health outcomes in pediatric and young adult kidney transplant recipients following kidney transplantation. STUDY DESIGN We conducted a cross-sectional study of all recipients at our center who had a 1-, 3-, 5-, and/or 10-year transplant anniversary visit between October 2008 and February 2015. The kidney transplant recipients were assessed at each time point according to an outcome measure consisting of 15 pass/fail criteria in 5 domains: allograft health, rejection and immunology, infection, cardiovascular health, and growth. RESULTS We analyzed 148 patients at 231 transplantation anniversary visit time points; 52 of 82 (63%) patients assessed at 1 year had an ideal outcome, meeting at least 13 of the 15 criteria. This decreased to 37% at year 3, 40% at year 5, and 26% at year 10 (P < .01). The most common failures across all time points occurred in the domains of growth (43%-52% passing) and cardiovascular health (33%-51% passing). Allograft health declined significantly, decreasing from 74% at year 1 to 33% at year 10 (P < .01). The percentage of patients with graft failure increased from 2.4% at 1 year to 39.5% at 10 years (P < .01), and patient deaths increased from 0 to 11% (P < .01) in the same time frame. CONCLUSIONS Ideal outcomes for pediatric kidney transplant recipients decrease over time with growth, cardiovascular health, and allograft health as the primary failure modes. Understanding the composite health of young recipients will allow primary care providers and nephrologists alike to evaluate the overall health of kidney transplant recipients and focus clinical care on the most common sequelae.
Collapse
Affiliation(s)
- Veronica A Taylor
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.
| | - Cassie L Kirby
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Edward J Nehus
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; University of Cincinnati College of Medicine, Cincinnati, OH
| | - Jens Goebel
- Section of Nephrology, Department of Pediatrics, Children's Hospital Colorado, Aurora, CO
| | - David K Hooper
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; University of Cincinnati College of Medicine, Cincinnati, OH
| |
Collapse
|
42
|
Filler G, Lee M. Educational review: measurement of GFR in special populations. Pediatr Nephrol 2018; 33:2037-2046. [PMID: 29218435 DOI: 10.1007/s00467-017-3852-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/13/2017] [Accepted: 11/16/2017] [Indexed: 12/31/2022]
Abstract
IMPORTANCE Changes in kidney function are typically followed by the sequential estimation of glomerular filtration rate (eGFR). Formulae for eGFR work well on a population basis, but there are well-known conditions where they do not work. OBJECTIVE The purpose of this review is to summarize the existing literature on special populations in the pediatric age range and provide recommendations on how to estimate GFR in these populations. FINDINGS The reliability of creatinine depends on muscle mass, while cystatin C (not widely available) is limited by inflammation and changes in protein catabolism. Various dietary factors can alter eGFR. Renal function in neonates changes drastically every day, and there are currently no satisfactory reference intervals for routine pediatric use. Gender effects and conditions such as wasting disease and obesity require alternative ways to obtain eGFR. In oncology patients, chemotherapy may negatively affect renal function, and nuclear GFR measurements may be necessary. For body builders, high muscle mass may lead to underestimation of eGFR using creatinine. CONCLUSIONS AND RELEVANCE Clinicians should be aware of special populations that may yield misleading eGFRs with conventional creatinine-based formulae, and that the alternative methods may be more appropriate for some populations.
Collapse
Affiliation(s)
- Guido Filler
- Department of Pediatrics, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, N6A 5W9, Canada. .,Department of Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, N6A 5W9, Canada. .,Department of Pathology and Laboratory Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, N5A 5A5, Canada. .,Children's Hospital, London Health Science Centre, University of Western Ontario, 800 Commissioners Road East, London, ON, N6A 5W9, Canada.
| | - Misan Lee
- Department of Pediatrics, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, N6A 5W9, Canada
| |
Collapse
|
43
|
An electronic technetium-99m-diethylenetriaminepentaacetic acid glomerular filtration rate spreadsheet with novel embedded quality assurance features. Nucl Med Commun 2018; 40:30-40. [PMID: 30362986 PMCID: PMC6282670 DOI: 10.1097/mnm.0000000000000929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Supplemental Digital Content is available in the text. Background Critical clinical decisions are made on the basis of the glomerular filtration rate (GFR) measured using technetium-99m-diethylenetriaminepentaacetic acid (DTPA) administration, followed by multiple time-point plasma sampling. As GFR studies rely on few data points and produce a single result, they are prone to technical errors that may remain inconspicuous. Objective We describe a data analysis worksheet that provides real-time quality control (QC) indicators and evaluate our initial clinical experience. Methods Two hundred and forty-six consecutive GFR studies carried out at our clinics were included. Our protocol used plasma samples at 2, 3, and 4 h after injection of technetium-99m-DTPA. Duplicate plasma samples, background samples, and aliquots of an activity dilution standard were counted. Times were logged for injection and dilution standard preparation, blood sampling, and counting. Data were entered into a custom GFR analysis spreadsheet that flagged QC in real time at warning and error levels, including QC of the expected ratio between dilution standard counts–activity ratio (CARs) measurements, which was newly introduced to our clinic. The prevalence of QC events was analyzed in three phases: baseline, training, and evaluation (n=31, 69, and 146, respectively). Results From the baseline and training phases (n=100), CAR reference values were determined for each of two sites. In the absence of the CAR QC indicator, errors were present in 5/31 (16%) examinations, but with QC indication decreased to 7/146 (5%) (P<0.05), suggesting that the real-time QC information guided the technologists to ensure proper standard preparation and sample handling, as intended. Improvements in other QC measures were also noted, resulting in an overall error rate reduction from 23 to 8%. Conclusion Real-time analysis of redundant information as a component of the GFR worksheet ensures quality results, but training of technologists and interpreting physicians is essential for optimal utilization of these QC indicators.
Collapse
|
44
|
Laguna P, Robles NR, Lopez Gomez J, Barroso S, Collado G. Lack of Correlation of Carotid Intima-Media Index and Peripheral Artery Disease. High Blood Press Cardiovasc Prev 2018; 25:379-383. [PMID: 30251108 DOI: 10.1007/s40292-018-0282-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 09/20/2018] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Increased carotid intima-media thickness (IMT) measurement is usually seen as a surrogate marker of peripheral artery disease (PAD) but there is scarce cumulated evidence to support this view. AIM To evaluate prevalence of increased IMT among patients with symptomatic PAD as well as the frequency of some cardiovascular risk factors in these patients. METHODS They were recruited 230 patients with diagnosis of medium peripheral artery disease in the Vascular Surgery Service outpatient's office. Serum cystatin C, homocysteine, and lipoprotein (a) were measured. GFR was estimated using the CKD-EPI equation and the Larsson one from cystatin C. RESULTS The global prevalence of increased IMT was 16.5% (n = 38, 95% CI 12.3-21.9). In all the frequency of hyperlipoproteinemia (a) was 34.2% (95% CI 28.4-40.5%). The global prevalence of hyperhomocysteinemia was 61.5% (95% CI 54.6-68.1%) and the proportion of patients with high cystatin C levels was 38.5% (95% CI 32.1-42.5). The prevalence of stage III chronic kidney disease or higher by CKD-EPI formula was much lesser (13.6%, 95% CI 9.7-18.7) as was the frequency obtained by the Larsson equation (28.7%, 95% CI 23.2-34.9). No differences were found between groups. CONCLUSIONS Increased IMT is not common among PAD patients. Hyperlipoproteinemia (a) and hyperhomocysteinemia are very frequent in these patients. High serum cystatin levels are also very prevalent but reduced GFR is not so frequent. There were no differences in the prevalence of the studied cardiovascular risk factors between those patients with increased IMT and those ones with normal IMT.
Collapse
Affiliation(s)
- Paloma Laguna
- Servicio de Cirugía Vascular, Unidad de Hipertensión Arterial, Hospital Infanta Cristina, Carretera de Portugal s/n., 06070, Badajoz, Spain
| | - Nicolás Roberto Robles
- Unidad de Hipertensión Arterial, Hospital Infanta Cristina, Carretera de Portugal s/n., 06070, Badajoz, Spain.
- Cátedra de Riesgo Cardiovascular, Facultad de Medicina, Universidad de Salamanca, Salamanca, Spain.
| | - Juan Lopez Gomez
- Servicio de Bioquímica Clínica, Hospital Infanta Cristina, Badajoz, Spain
| | - Sergio Barroso
- Unidad de Hipertensión Arterial, Hospital Infanta Cristina, Carretera de Portugal s/n., 06070, Badajoz, Spain
| | - Gabriel Collado
- Servicio de Cirugía Vascular, Unidad de Hipertensión Arterial, Hospital Infanta Cristina, Carretera de Portugal s/n., 06070, Badajoz, Spain
| |
Collapse
|
45
|
Li DY, Yin WJ, Zhou LY, Ma RR, Liu K, Hu C, Zhou G, Zuo XC. Utility of cystatin C-based equations in patients undergoing dialysis. Clin Chim Acta 2018; 485:282-287. [PMID: 30006283 DOI: 10.1016/j.cca.2018.07.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/05/2018] [Accepted: 07/09/2018] [Indexed: 01/13/2023]
Abstract
Serum cystatin C (CysC) measurement is regarded as a simple and practical alternative to measure residual renal function for dialysis patients. Recent studies have shown that CysC has better diagnostic accuracy or at least equivalence to creatinine in predicting the early stages of renal damage, and is closely related to clinical outcomes of dialysis patients. Thus, the applicability of CysC-derived equations in patients undergoing dialysis should be paid attention. Here, we review the role of CysC in diagnosis, renal function evaluation, and prognosis outcomes for dialysis patients, so as to provide them with useful suggestions on evaluating renal function and predicting adverse outcomes in clinical practice.
Collapse
Affiliation(s)
- Dai-Yang Li
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China
| | - Wen-Jun Yin
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China
| | - Ling-Yun Zhou
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China
| | - Rong-Rong Ma
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, PR China
| | - Kun Liu
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China
| | - Can Hu
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China
| | - Ge Zhou
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China
| | - Xiao-Cong Zuo
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, PR China.
| |
Collapse
|
46
|
Tang Z, Tao J, Sun L, Han Z, Chen H, Huang Z, Zhou W, Zhao C, Fei S, Que H, Li Y, Tan R, Gu M. Prospective Comparison of Equations Based on Creatinine and Cystatin C for the Glomerular Filtration Rate Estimation in Chinese Renal Transplant Recipients. Transplant Proc 2018; 50:85-91. [PMID: 29407337 DOI: 10.1016/j.transproceed.2017.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 11/06/2017] [Accepted: 12/04/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Currently, there is no dedicated equation to estimate glomerular filtration rate (GFR) for transplanted kidneys. This study aimed to compare the performance of serum creatinine (Scr)- and cystatin C (CysC)-based equations in Chinese renal transplant recipients. METHODS A total of 252 stable renal transplant recipients were enrolled in this study. The plasma clearance of 99mTc-DTPA (rGFR) was used as a reference standard. The Scr, CysC, and rGFR of the patients were measured on the same day. The bias, precision, accuracy (percentage of estimates within 10%, 30%, and 50% of rGFR), and agreements of 8 Scr and 5 CysC eGFR equations were assessed. The factors affecting the accuracy were also evaluated. RESULTS Among the Scr-based equations, the Japanese Society of Nephrology-Chronic Kidney Disease Initiatives (JSN-CKDI) equation had the best overall performance with a bias of -6.2 mL/min/1.73 m2, and 96.1% of its estimates were within 30% of the rGFR. For the CysC-based equations, the Filler equation had the best performance with a bias of -3.9 mL/min/1.73 m2, and 93.7% of its estimates were within 30% of the rGFR. Overall, the CysC-based equations showed better performance than the Scr-based equations. In addition, significant differences were observed between bias and gender and between bias and rGFR value in some equations, whereas transplantation time and immunosuppressive regimens were not correlated with the bias. CONCLUSION The JSN-CKDI equation provides the best estimation of the GFR equations, and the CysC-based equations performed better than the Scr-based equations in this population.
Collapse
Affiliation(s)
- Z Tang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - J Tao
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - L Sun
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Z Han
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - H Chen
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Z Huang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - W Zhou
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - C Zhao
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - S Fei
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - H Que
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Y Li
- Department of Nuclear Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - R Tan
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China.
| | - M Gu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China.
| |
Collapse
|
47
|
Cummings LA, Clarke A, Sochett E, Daneman D, Cherney DZ, Reich HN, Scholey JW, Dunger DB, Mahmud FH. Social Determinants of Health Are Associated with Markers of Renal Injury in Adolescents with Type 1 Diabetes. J Pediatr 2018; 198:247-253.e1. [PMID: 29752172 PMCID: PMC6016557 DOI: 10.1016/j.jpeds.2018.03.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 02/26/2018] [Accepted: 03/14/2018] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To examine the relationship between the social determinants of health and markers of early renal injury in adolescent patients with type 1 diabetes (T1D). STUDY DESIGN Renal outcomes included estimated glomerular filtration rate (eGFR) and albumin-creatinine excretion ratio (ACR). Differences in urinary and serum inflammatory markers also were assessed in relation to social determinants of health. Regression analysis was used to evaluate the association between the Ontario Marginalization Index (ON-Marg) as a measure of the social determinants of health, patient characteristics, ACR, eGFR, and renal filtration status (hyperfiltration vs normofiltration). RESULTS Participants with T1D (n = 199) with a mean age of 14.4 ± 1.7 years and diabetes duration of 7.2 ± 3.1 years were studied. Mean eGFR was 122.0 ± 19.4 mL/min/1.73 m2. Increasing marginalization was positively associated with eGFR (P < .0001) but not with ACR (P = .605). Greater marginalization was associated with greater median levels of urinary interleukin (IL)-2, IL-12 (p40), macrophage-derived chemokine, monocyte chemoattractant protein-3, and tumor necrosis factor-β and serum IL-2. ON-Marg was significantly associated with eGFR after we controlled for age, sex, body mass index z score, ethnicity, serum glucose, and hemoglobin A1c in linear regression. A similar association between hyperfiltration and ON-Marg score was observed in multivariable logistic regression. CONCLUSION Increasing marginalization is significantly associated with both eGFR and hyperfiltration in adolescents with T1D and is associated with significant changes in urinary inflammatory biomarkers. These findings highlight a potentially important interaction between social and biological determinants of health in adolescents with T1D.
Collapse
Affiliation(s)
- Laura A.M. Cummings
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Antoine Clarke
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Etienne Sochett
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Denis Daneman
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - David Z. Cherney
- Division of Nephrology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Heather N. Reich
- Division of Nephrology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - James W. Scholey
- Division of Nephrology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - David B. Dunger
- Department of Pediatrics, University of Cambridge, Cambridge, United Kingdom
| | - Farid H. Mahmud
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada,Reprint requests: Farid H. Mahmud, MD, Division of Pediatric Endocrinology, Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8, Canada.
| |
Collapse
|
48
|
Lovshin JA, Škrtić M, Bjornstad P, Moineddin R, Daneman D, Dunger D, Reich HN, Mahmud F, Scholey J, Cherney DZI, Sochett E. Hyperfiltration, urinary albumin excretion, and ambulatory blood pressure in adolescents with Type 1 diabetes mellitus. Am J Physiol Renal Physiol 2018; 314:F667-F674. [PMID: 29357443 PMCID: PMC5966760 DOI: 10.1152/ajprenal.00400.2017] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/10/2017] [Accepted: 12/07/2017] [Indexed: 12/15/2022] Open
Abstract
Adolescents with Type 1 diabetes mellitus (T1DM) are at risk for hyperfiltration and elevated urinary albumin-to-creatinine ratio (ACR), which are early indicators of diabetic nephropathy. Adolescents with T1DM also develop early changes in blood pressure, cardiovascular structure, and function. Our aims were to define the relationships between hyperfiltration, ACR, and 24-h ambulatory blood pressure over time in adolescents with T1DM. Normotensive, normoalbuminuric adolescents ( n = 98) with T1DM underwent baseline and 2-yr 24-h ambulatory blood pressure monitoring, glomerular filtration rate (eGFR) estimated by cystatin C (Larsson equation), and ACR measurements. Linear regression models adjusted for diabetes duration, sex, and HbA1c were used to determine associations. Hyperfiltration (eGFR ≥ 133 ml/min) was present in 31% at baseline and 21% at 2-yr follow-up. Hyperfiltration was associated with greater odds of rapid GFR decline (>3 ml·min-1·yr-1) [OR: 5.33, 95%; CI: 1.87-15.17; P = 0.002] over 2 yr. Natural log of ACR at baseline was associated with greater odds of hyperfiltration (OR: 1.71, 95% CI: 1.00-2.92; P = 0.049) and 2-yr follow-up (OR: 2.14, 95%; CI: 1.09-4.19; P = 0.03). One SD increase in eGFR, but not ln ACR, at 2-yr follow-up conferred greater odds of nighttime nondipping pattern (OR: 1.96, 95% CI: 1.06-3.63; P = 0.03). Hyperfiltration was prevalent at baseline and at 2-yr follow-up, predicted rapid decline in GFR, and was related to ACR. Elevated GFR at 2-yr follow-up was associated with nighttime nondipping pattern. More work is needed to better understand early relationships between renal hemodynamic and systemic hemodynamic changes in adolescents with T1DM to reduce future cardiorenal complications.
Collapse
Affiliation(s)
- Julie A Lovshin
- Division of Endocrinology and Metabolism, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronoto , Toronto, Ontario , Canada
| | - Marko Škrtić
- Division of Nephrology, Department of Medicine, University Health Network, University of Toronto , Toronto, Ontario , Canada
| | - Petter Bjornstad
- Division of Nephrology, Department of Medicine, University Health Network, University of Toronto , Toronto, Ontario , Canada
- Division of Endocrinology, Department of Pediatrics, University of Colorado School of Medicine , Aurora, Colorado
| | - Rahim Moineddin
- Department of Family and Community Medicine, University of Toronto , Toronto, Ontario , Canada
| | - Denis Daneman
- Division of Endocrinology and Metabolism, Department of Pediatrics, Hospital for Sick Children, University of Toronto , Toronto, Ontario , Canada
| | - David Dunger
- Department of Pediatrics, University of Cambridge , Cambridge , United Kingdom
| | - Heather N Reich
- Division of Nephrology, Department of Medicine, University Health Network, University of Toronto , Toronto, Ontario , Canada
| | - Farid Mahmud
- Division of Endocrinology and Metabolism, Department of Pediatrics, Hospital for Sick Children, University of Toronto , Toronto, Ontario , Canada
| | - James Scholey
- Division of Nephrology, Department of Medicine, University Health Network, University of Toronto , Toronto, Ontario , Canada
| | - David Z I Cherney
- Division of Nephrology, Department of Medicine, University Health Network, University of Toronto , Toronto, Ontario , Canada
| | - Etienne Sochett
- Division of Endocrinology and Metabolism, Department of Pediatrics, Hospital for Sick Children, University of Toronto , Toronto, Ontario , Canada
| |
Collapse
|
49
|
Mindikoglu AL, Opekun AR, Mitch WE, Magder LS, Christenson RH, Dowling TC, Weir MR, Seliger SL, Howell CD, Raufman JP, Rana A, Goss JA, Khaderi SA, Vierling JM. Cystatin C Is a Gender-Neutral Glomerular Filtration Rate Biomarker in Patients with Cirrhosis. Dig Dis Sci 2018; 63:665-675. [PMID: 29392554 PMCID: PMC5994910 DOI: 10.1007/s10620-017-4897-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 12/21/2017] [Indexed: 12/28/2022]
Abstract
BACKGROUND Lower serum Cr levels in women as compared to men result in underestimation of renal dysfunction and lower model for end-stage liver disease-sodium scores leading to reduced access to liver transplantation in women compared to men with comparable hepatic dysfunction. AIM The aim of this study was to determine the gender differences in serum Cr, cystatin C, and other endogenous glomerular filtration rate (GFR) biomarkers, measured and estimated GFR, Cr clearance, and Cr production rates. METHODS We measured GFR by iothalamate plasma clearance in 103 patients with cirrhosis and assessed gender differences in GFR, Cr clearance and production rate, serum Cr, cystatin C and other endogenous GFR biomarkers including beta-trace protein, beta-2 microglobulin, and dimethylarginines. RESULTS Comparison of men and women showed significantly lower values for mean serum Cr (0.97 vs. 0.82 mg/dl, P = 0.023), and Cr production rate (13.37 vs. 11.02 mg/kg/day, P = 0.022). In contrast to the serum Cr and Cr production rate, men and women exhibited no significant differences in the means of serum cystatin C and other GFR biomarkers, measured GFR, GFR estimated using Cr-cystatin C GFR equation for cirrhosis, measured and estimated Cr clearances. After controlling for age, race, weight, height, and GFR, female gender remained associated with lower serum Cr levels (P = 0.003). Serum cystatin C levels were not associated with gender, age, race, weight, height, C-reactive protein, and history of hypothyroidism. CONCLUSIONS Our results suggest that cystatin C and endogenous GFR biomarkers other than Cr, measured GFR, GFR estimated by Cr-cystatin C GFR equation for cirrhosis, measured and estimated Cr clearance minimized between-gender biases in accounting for renal function in patients with cirrhosis. Therefore, serum cystatin C should be measured as a complementary test to serum Cr when renal function is assessed in patients with cirrhosis, particularly in women and those with sarcopenia.
Collapse
Affiliation(s)
- Ayse L Mindikoglu
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, 6620 Main Street, Suite 1450, Houston, TX, 77030, USA.
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.
| | - Antone R Opekun
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - William E Mitch
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Laurence S Magder
- Division of Biostatistics and Bioinformatics, Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Robert H Christenson
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Thomas C Dowling
- College of Pharmacy, Ferris State University, Grand Rapids, MI, USA
| | - Matthew R Weir
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Stephen L Seliger
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Charles D Howell
- Department of Medicine, Howard University College of Medicine, Washington, DC, USA
| | - Jean-Pierre Raufman
- Division of Gastroenterology and Hepatology and VA Maryland Health Care System, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Abbas Rana
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, 6620 Main Street, Suite 1450, Houston, TX, 77030, USA
| | - John A Goss
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, 6620 Main Street, Suite 1450, Houston, TX, 77030, USA
| | - Saira A Khaderi
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, 6620 Main Street, Suite 1450, Houston, TX, 77030, USA
| | - John M Vierling
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, 6620 Main Street, Suite 1450, Houston, TX, 77030, USA
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| |
Collapse
|
50
|
Conkar S, Mir S, Karaslan FN, Hakverdi G. Comparing different estimated glomerular filtration rate equations in assessing glomerular function in children based on creatinine and cystatin C. J Clin Lab Anal 2018; 32:e22413. [PMID: 29484708 DOI: 10.1002/jcla.22413] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 01/27/2018] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Glomerular filtration rate (GFR) is the best marker used to assess renal function. Estimated GFR (eGFR) equations have been developed, and the ideal formula is still under discussion. We wanted to find the most practical and reliable GFR in eGFR formulas. We compared serum creatinine (Scr)- and cystatin C (cysC)-based eGFR formulas in the literature. We also aimed to determine the suitability and the reliability of cysC for practical use in determining GFR in children. METHODS We have enrolled 238 children in the study. Measurement of 24-hour creatinine clearance was compared with eGFR equations which are based on Scr, cysC, and creatinine plus cysC. RESULTS Of the patients (n = 238), 117 were males (49.2%), and 121 (50.8%) were females with a median age of 9.0 years. The areas under the ROC curves of Counahan-Barratt and Bedside Schwartz were equal and 0.89 (with a 95% CI 0.80-0.97). The areas under the ROC curves were not significantly different in all cystatin C-based eGFR equations. The highest AUC values for differentiating normal vs abnormal renal functions according to CrCl24 were for the CKiD-cysC and CKiD-Scr-cysC equations. CONCLUSIONS In our study, compared with creatinine-based ones, the cystatin C-based formulas did not show much superiority in predicting eGFR. Still, we think Bedside Schwartz is a good formula to provide ease of use because, in this equation, the constant k is same for all age groups. However, the most valuable equations in determining chronic kidney disease are the CKiD-cysC and CKiD-Scr-cysC equations.
Collapse
Affiliation(s)
- Seçil Conkar
- Faculty of Medicine, Department of Pediatric Nephrology, Ege University, Izmir, Turkey
| | - Sevgi Mir
- Faculty of Medicine, Department of Pediatric Nephrology, Ege University, Izmir, Turkey
| | | | - Gülden Hakverdi
- Faculty of Medicine, Department of Biostatistics and Medical Informatics, Gülden Hakverdi Ege University, Izmir, Turkey
| |
Collapse
|