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Creatinine AND GFR

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https://www.readbyqxmd.com/read/29333147/novel-filtration-markers-for-gfr-estimation
#1
Amy B Karger, Lesley A Inker, Josef Coresh, Andrew S Levey, John H Eckfeldt
Creatinine-based glomerular filtration rate estimation (eGFRcr) has been improved and refined since the 1970s through both the Modification of Diet in Renal Disease (MDRD) Study equation in 1999 and the CKD Epidemiology Collaboration (CKD-EPI) equation in 2009, with current clinical practice dependent primarily on eGFR for accurate assessment of GFR. However, researchers and clinicians have recognized limitations of relying on creatinine as the only filtration marker, which can lead to inaccurate GFR estimates in certain populations due to the influence of non-GFR determinants of serum or plasma creatinine...
December 2017: EJIFCC
https://www.readbyqxmd.com/read/29333146/cystatin-c-is-indispensable-for-evaluation-of-kidney-disease
#2
Anders Grubb
The present minireview of the place of cystatin C in clinical medicine emphasizes, and discuss the evidence, that cystatin C-based GFR-estimating equations do not require the use of vague terms like race and sex, that cystatin C-based GFR-esti mating equations are useful for both children and adults, including the elderly, that the best GFR-estimation requires simultaneous use of both cystatin C- and creatinine-based equations, that cystatin C-based GFR-estimating equations are superior to creatinine-based equations in predicting end-stage renal disease, cardiovascular manifestations, hospitalisation and death, and, finally that cystatin C is required to diagnose the new syndrome "Shrunken Pore Syndrome" with its high mortality and morbidity, even in the absence of reduced GFR...
December 2017: EJIFCC
https://www.readbyqxmd.com/read/29333144/did-creatinine-standardization-give-benefits-to-the-evaluation-of-glomerular-filtration-rate
#3
Laurence Piéroni, Anne-Sophie Bargnoux, Jean-Paul Cristol, Etienne Cavalier, Pierre Delanaye
During the last decade, a lot of efforts has been made to improve the evaluation of renal functions. Measured Glomerular Filtration Rate (GFR) remains the only valuable test to confirm or confute the status of chronic kidney disease (CKD) and is recommended by Kidney Disease Global Outcomes guidelines when estimation of GFR is not reliable. However, in routine clinical practice, serum creatinine remains the one of the most prescribed biological parameters and is an undeniable factor, alone or in association with other parameters, of the estimation of GFR...
December 2017: EJIFCC
https://www.readbyqxmd.com/read/29331592/combined-creatinine-cystatin-c-ckd-epi-equation-significantly-underestimates-measured-glomerular-filtration-rate-in-people-with-type-2-diabetes-mellitus
#4
Júlia Dauernheimer Machado, Eduardo Guimarães Camargo, Roberta Boff, Laís da Silva Rodrigues, Joíza Lins Camargo, Ariana Aguiar Soares, Sandra Pinho Silveiro
AIM: To evaluate the accuracy of creatinine and cystatin C (cysC) equations to estimate glomerular filtration rate (GFR) in type 2 diabetes mellitus (DM) patients and healthy adults. METHODS: Case-control study including 84 patients with type 2 DM and 100 healthy adults with measured GFR (mGFR)≥60mL/min/1.73m2. GFR was measured by 51Cr-EDTA and estimated (eGFR) by the following equations using creatinine, cysC or both markers: Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), Caucasian Asian Pediatrics and Adults (CAPA), CKD-EPI creatinine-cystatin C (CKDEPI-CC), and CKD-EPI cystatin C (CKDEPIcysC)...
January 10, 2018: Clinical Biochemistry
https://www.readbyqxmd.com/read/29329828/frequency-and-prognostic-significance-of-acute-kidney-recovery-in-patients-who-underwent-transcatheter-aortic-valve-implantation
#5
Amir Azarbal, Kevin L Leadholm, Takamaru Ashikaga, Richard J Solomon, Harold L Dauerman
Acute kidney injury (AKI) after transcatheter aortic valve implantation (TAVI) is associated with increased mortality. As significant hemodynamic improvement may occur with relief of aortic stenosis, we hypothesized that TAVI patients may demonstrate the opposite phenomena: acute kidney recovery (AKR). We studied the incidence and predictors of AKR in post-TAVI patients. A total of 366 consecutive patients underwent TAVI (January 2012 to January 2017) at a single center. We defined AKR as a 25% improvement in glomerular filtration rate (GFR) at 48 hours after TAVI...
December 13, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29327197/-new-kidney-function-tests-renal-functional-reserve-and-furosemide-stress-test
#6
REVIEW
D Kindgen-Milles, T Slowinski, T Dimski
Acute kidney injury (AKI) occurs in 30-50% of all intensive care patients. Renal replacement therapy (RRT) has to be initiated in 10-15%. The early in-hospital mortality is about 50%. Up to 20% of all survivors develop chronic kidney disease after intensive care discharge and progress to end-stage kidney disease within the next 10 years. For timely initiation of prophylactic or therapeutic interventions, it is crucial to exactly determine the actual kidney function, i. e., glomerular filtration rate (GFR), and to gain insight into the further development of kidney function...
January 11, 2018: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/29322215/-assessment-of-kidney-function-creatinine-is-not-the-whole-story
#7
REVIEW
U Huynh-Do, M Fiedler, B Vogt
Chronic renal insufficiency has a high prevalence and leads not only to a severe impairment in the quality of life but also to a higher mortality, mainly due to cardiovascular complications; however, in the early stages where there is still a chance for a therapeutic intervention, it is often underestimated because depending on endogenous factors (e.g. age and muscle mass), serum creatinine could falsely remain in the normal range while kidney function is already impaired. An exact measurement of the glomerular filtration rate (GFR) using radionuclide techniques is cumbersome and usually confined to rare cases, such as in clinical studies...
January 10, 2018: Der Internist
https://www.readbyqxmd.com/read/29304508/estimation-of-the-glomerular-filtration-rate-in-older-individuals-with-serum-creatinine-based-equations-a-systematic-comparison-between-ckd-epi-and-bis1
#8
REVIEW
Teodoro J Oscanoa, José P Amado, Roman Romero-Ortuno, José A Hidalgo
AIM: CKD-EPIcr (Chronic Kidney Disease Epidemiology Collaboration creatinine) and BIS1 (Berlin Initiative Study) are two serum creatinine-based formulae for the estimation of glomerular filtration rate (GFR). However, their comparative accuracy in older people has not been well established. Our aim was to conduct a systematic comparative study of the accuracy of estimation of GFR in older people with these two formulae. METHODS: We conducted a systematic search in Pubmed, EMBASE and Central databases on the validity of the CKD-EPIcr and BIS1 formulae in people aged 60 or more years...
December 30, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/29299823/clinicopathological-study-of-male-and-female-patients-with-lupus-nephritis-a-retrospective-study
#9
Wei Peng, Yi Tang, Li Tan, Wei Qin
PURPOSE: The aim of this study was to assess the impact of sex on long-term outcomes in patients with lupus nephritis (LN). METHODS: Data of patients were collected at a single tertiary hospital from June 2010 to June 2016. Clinicopathological features and treatment responses of LN patients with different genders were compared. The primary endpoint was serum creatinine level doubled, GFR < 15 mL/min, initiation of renal replacement treatment or death. The secondary endpoint was complete remission or partial remission...
January 3, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29291380/unique-metabolomic-signature-associated-with-hepatorenal-dysfunction-and-mortality-in-cirrhosis
#10
Ayse L Mindikoglu, Antone R Opekun, Nagireddy Putluri, Sridevi Devaraj, David Sheikh-Hamad, John M Vierling, John A Goss, Abbas Rana, Gagan K Sood, Prasun K Jalal, Lesley A Inker, Robert P Mohney, Hocine Tighiouart, Robert H Christenson, Thomas C Dowling, Matthew R Weir, Stephen L Seliger, William R Hutson, Charles D Howell, Jean-Pierre Raufman, Laurence S Magder, Cristian Coarfa
The application of nontargeted metabolomic profiling has recently become a powerful noninvasive tool to discover new clinical biomarkers. This study aimed to identify metabolic pathways that could be exploited for prognostic and therapeutic purposes in hepatorenal dysfunction in cirrhosis. One hundred three subjects with cirrhosis had glomerular filtration rate (GFR) measured using iothalamate plasma clearance, and were followed until death, transplantation, or the last encounter. Concomitantly, plasma metabolomic profiling was performed using ultra-performance liquid chromatography-tandem mass spectrometry to identify preliminary metabolomic biomarker candidates...
December 12, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29286938/the-relationship-between-body-weight-cystatin-c-and-serum-creatinine-in-neonates
#11
Y Kandasamy, D Rudd, R Smith
BACKGROUND: Serum creatinine (SCr) measurement to determine glomerular filtration rate (GFR) in neonates has many pitfalls. Cystatin C (CysC) appears to be a more reliable biomarker. METHODS: We investigated the effect of birth weight on SCr and CysC measurements in a cohort of 74 infants, consisting of both term and ex-premature infants at term postmenstrual age. SCr and Cys C measurements were carried out at the same time. RESULTS: Eighty six infants were recruited into this study out of which complete data were available in 80 infants...
2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/29276928/-prevalence-of-markers-of-chronic-kidney-disease-in-patients-with-arterial-hypertension-results-of-epidemiological-study-chronograf
#12
A M SHutov, Z D Kobalava, S V Villevalde, N Y Borovkova, T E Nichik, G S Safuanova
In an noninterventional observational open multicenter program CHRONOGRAF the prevalence of markers of chronic kidney disease (CKD) was studied in 1600 patients with arterial hypertension with and without type 2 diabetes mellitus. Glomerular filtration rate (GFR) was calculated (CKD‑EPI formula) and albuminuria (AU) was determined as albumin/creatinine (A/Cr) ratio in the morning portion of urine. In 49.4% of patients decreased GFR 30 mg/g was detected. Decrease of GFR 30 mg/g - in 32.6%, combination of reduced GFR and high/very high AU - in 18%...
October 2017: Kardiologiia
https://www.readbyqxmd.com/read/29261774/aging-and-decreased-glomerular-filtration-rate-an-elderly-population-based-study
#13
Regina C R M Abdulkader, Emmanuel A Burdmann, Maria Lúcia Lebrão, Yeda A O Duarte, Dirce M T Zanetta
BACKGROUND: Although a reduced glomerular filtration rate (GFR) in old people has been attributed to physiologic aging, it may be associated with kidney disease or superimposed comorbidities. This study aims to assess the prevalence of decreased GFR in a geriatric population in a developing country and its prevalence in the absence of simultaneous diseases. STUDY DESIGN AND METHODS: This is a cross-sectional study of data from the Saúde, Bem-Estar e Envelhecimento cohort study (SABE study[Health, Well-Being and Aging]), a multiple cohorts study...
2017: PloS One
https://www.readbyqxmd.com/read/29240709/prevalence-of-albuminuria-in-children-living-in-a-rural-agricultural-and-fishing-subsistence-community-in-lake-chapala-mexico
#14
Felipe Lozano-Kasten, Erick Sierra-Diaz, Alfredo de Jesus Celis-de la Rosa, María Margarita Soto Gutiérrez, Alejandro Aarón Peregrina Lucano
The occurrence of Chronic Kidney Disease (CKD) of unknown etiology in autochthonous child populations residing along the Lake Chapala lakeshore is endemic (Jalisco, México). The objective of this study was to determine the prevalence of albuminuria in the pediatric population and to measure the glomerular filtration rate in children with two positive albuminuria tests. Urinary albumin was measured in 394 children. Subjects with two or more positive albuminuria test donated blood samples for the determination of serum biomarkers...
December 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29240010/well-preserved-renal-function-in-children-with-untreated-chronic-liver-disease
#15
Ulla B Berg, Antal Németh
OBJECTIVES: Based on studies with hepatorenal syndrome, it is widely regarded that renal function is impacted in chronic liver disease. Therefore we investigated renal function in our children with chronic liver disease. METHODS: In a retrospective study of 277 children with chronic liver disease, renal function was investigated as glomerular filtration rate (GFR) and effective renal plasma flow (ERPF), measured as clearance of inulin and para-amino hippuric acid or clearance of iohexol...
December 12, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29237422/mdrd-vs-ckd-epi-in-comparison-to-51chromium-edta-a-cross-sectional-study-of-malaysian-ckd-cohort
#16
Maisarah Jalalonmuhali, Soo Kun Lim, Mohammad Nazri Md Shah, Kok Peng Ng
BACKGROUND: Accurate measurement of renal function is important: however, radiolabelled gold standard measurement of GFR is highly expensive and can only be used on a very limited scale. We aim to compare the performance of Modification of Diet in Renal Disease (MDRD) and Chronic Kidney Disease-Epidemiology Collaboration (CKD-EPI) equations in the multi-ethnic population attending University Malaya Medical Centre (UMMC). METHODS: This is a cross-sectional study recruiting patients, who attend UMMC Nephrology clinics on voluntary basis...
December 13, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/29229165/measurement-and-estimation-of-glomerular-filtration-rate-in-children
#17
REVIEW
Ayesa N Mian, George J Schwartz
Rapid, accurate, and precise measures of kidney function are essential for daily management of patients. While plasma and urinary clearances provide the greatest accuracy for assessing glomerular filtration rate (GFR), these are often impractical particularly for the care of children. Serum creatinine, the most commonly used endogenous marker, is simple, convenient, and practical but less accurate because of the influence of non-GFR determinants such as muscle mass, which increases with age in children. GFR estimating equations have been developed for adults and children to improve the accuracy of endogenous biomarkers, such as creatinine and cystatin C, by accounting for some of the non-GFR determinants, thus enhancing the practitioner's ability to assess GFR...
November 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/29224015/renal-resistive-index-as-a-novel-indicator-for-renal-complications-in-high-fat-diet-fed-mice
#18
Hairong Xu, Zejun Ma, Shan Lu, Rui Li, Liangkun Lyu, Lexi Ding, Qiulun Lu
BACKGROUND/AIMS: The renal resistive index (RI) is a novel candidate as a renal injury prognostic indicator, but it remains unclear how renal RI levels correspond to renal injury in diabetic nephropathy. METHODS: To examine this issue, we compared 8-week-old male C57BL/6 mice fed with high-fat diet (HFD) versus chow diet (CHD) for 16 weeks. At 8 and 12 weeks, the glomerular filtration rate (GFR), urinary albumin-to-creatinine ratio (UACR), and inflammatory factors (IL-1β, IL-6, TNFα, and MCP-1) were measured, along with the increase in renal RI...
December 7, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29218435/educational-review-measurement-of-gfr-in-special-populations
#19
Guido Filler, Misan Lee
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...
December 7, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29209836/accuracy-of-cystatin-c-for-the-detection-of-abnormal-renal-function-in-children-undergoing-chemotherapy-for-malignancy-a-systematic-review-using-individual-patient-data
#20
Penny Whiting, Kate Birnie, Jonathan A C Sterne, Catherine Jameson, Rod Skinner, Bob Phillips
PURPOSE: We conducted a systematic review and individual patient data (IPD) meta-analysis to examine the utility of cystatin C for evaluation of glomerular function in children with cancer. METHODS: Eligible studies evaluated the accuracy of cystatin C for detecting poor renal function in children undergoing chemotherapy. Study quality was assessed using QUADAS-2. Authors of four studies shared IPD. We calculated the correlation between log cystatin C and GFR stratified by study and measure of cystatin C...
December 6, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
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