4
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Cistatina C vs. marcadores convencionales de función renal: una actualización Translated title: Cystatin C vs conventional markers of renal function: an update

      review-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          RESUMEN Objetivo: Esta revisión busca proporcionar información actual de los avances de los últimos diez años reportados para mejorar el diagnóstico de enfermedad renal con marcadores como la cistatina C, en comparación con otros analitos convencionales utilizados en la práctica clínica. Materiales y métodos: Se llevó a cabo una búsqueda de artículos originales y de revisión en idioma inglés y español de los últimos diez años en las siguientes bases de datos: MedLine, Library Plus, ProQuest, NCBI y ScienceDirect. Resultados: Para la evaluación de la función renal se usan marcadores convencionales como la creatinina y el nitrógeno ureico en sangre. Sin embargo, estas pruebas están sometidas a diferentes fuentes de variabilidad biológica, razón por la cual se ve la necesidad de identificar otros marcadores que permitan detectar de forma precoz la lesión renal, y que no se vean influenciados por factores dependientes del paciente como la cistatina C, una proteína de bajo peso molecular propuesta como un marcador de función renal más exacto, específico y sensible que la creatinina en la estimación de la tasa de filtración glomerular. Conclusión: Se considera que la cistatina C cumple con características que la hacen un biomarcador más útil en la determinación de lesión renal, ya que muestra mayor utilidad diagnóstica que la creatinina sérica para detectar daño renal temprano, sin embargo, no se utiliza como prueba rutinaria en el diagnóstico de patologías renales por su alto costo al momento de realizar un montaje en el laboratorio clínico.

          Translated abstract

          ABSTRACT Objective: To provide current information about the progress of the last ten years reported to improve the diagnosis of kidney disease with markers such as cystatin C, with other usual analytes used in clinical practice. Materials and methods: A search for original and review articles in english and spanish in the last ten years was carried out in the following databases: MedLine, Library Plus, Pro-Quest, NCBI and ScienceDirect. Results: For the evaluation of renal function markers are used such as creatinine and blood urea nitrogen. However, these tests are sometimes determined to different sources of biological variability, which is why the need to identify other markers that detect kidney damage early, and that is not influenced by pacific-dependent factors such as Cystatin C, a molecular protein of low molecular weight proposed as a marker of renal function more accurate, specific and sensitive than creatinine in modifying the glomerular filtration rate. Conclusion: Cystatin C meets with characteristics that make it a more useful biomarker in the determination of renal injury, since it shows greater diagnostic utility than serum creatinine to detect early renal damage, however, it is not used as a routine test in the diagnosis of renal pathologies due to its high cost when assembling in the clinical laboratory.

          Related collections

          Most cited references51

          • Record: found
          • Abstract: found
          • Article: not found

          Normalization of urinary biomarkers to creatinine during changes in glomerular filtration rate.

          Urinary biomarkers, such as albumin and other markers of kidney injury, are frequently reported as a normalized ratio to urinary creatinine (UCr) concentration [UCr] to control for variations in urine flow rate. The implicit assumption is that UCr excretion is constant across and within individuals, such that changes in the ratio will reflect changes in biomarker excretion. Using computer simulations of creatinine kinetics, we found that normalized levels of a biomarker reflecting tubular injury can be influenced by dynamic changes in the UCr excretion rate when the glomerular filtration rate changes. Actual timed urine collections from hospitalized patients with changing glomerular filtration rates and/or critical illness exhibited variability in UCr excretion rates across and within individuals. Normalization by [UCr] may, therefore, result in an underestimation or overestimation of the biomarker excretion rate depending on the clinical context. Lower creatinine excretion in the setting of acute kidney injury or poor renal allograft function may amplify a tubular injury biomarker signal, thereby increasing its clinical utility. The variability of creatinine excretion, however, will complicate the determination of a threshold value for normalized biomarkers of acute or chronic kidney disease, including albumin. Thus, we suggest that the most accurate method to quantify biomarkers requires the collection of timed urine specimens to estimate the actual excretion rate, provided that the biomarker is stable over the period of collection. This ideal must be balanced, however, against practical considerations.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Biomarkers in chronic kidney disease, from kidney function to kidney damage.

            Chronic kidney disease (CKD) typically evolves over many years, with a long latent period when the disease is clinically silent and therefore diagnosis, evaluation and treatment is based mainly on biomarkers that assess kidney function. Glomerular filtration rate (GFR) remains the ideal marker of kidney function. Unfortunately measuring GFR is time consuming and therefore GFR is usually estimated from equations that take into account endogenous filtration markers like serum creatinine (SCr) and cystatin C (CysC). Other biomarkers such as albuminuria may precede kidney function decline and have demonstrated to have strong associations with disease progression and outcomes. New potential biomarkers have arisen with the promise of detecting kidney damage prior to the currently used markers. The aim of this review is to discuss the utility of the GFR estimating equations and biomarkers in CKD and the different clinical settings where these should be applied. The CKD-Epidemiology Collaboration equation performs better than the modification of diet in renal disease equation, especially at GFR above 60 mL/min per 1.73 m(2). Equations combining CysC and SCr perform better than the equations using either CysC or SCr alone and are recommended in situations where CKD needs to be confirmed. Combining creatinine, CysC and urine albumin to creatinine ratio improves risk stratification for kidney disease progression and mortality. Kidney injury molecule and neutrophil gelatinase-associated lipocalin are considered reasonable biomarkers in urine and plasma to determine severity and prognosis of CKD.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Cystatin C is not a better estimator of GFR than plasma creatinine in the general population.

              Accurate measurement of glomerular filtration rate (GFR) is complicated and costly; therefore, GFR is commonly estimated by assessing creatinine or cystatin C concentrations. Because estimates based on cystatin C predict cardiovascular disease better than creatinine, these estimates have been hypothesized to be superior to those based on creatinine, when the GFR is near the normal range. To test this, we measured GFR by iohexol clearance in a representative sample of middle-aged (50-62 years) individuals in the general population, excluding those with coronary heart or kidney disease, stroke or diabetes mellitus. Bias, precision (median and interquartile range of estimated minus measured GFR (mGFR)), and accuracy (percentage of estimates within 30% of mGFR) of published cystatin C and creatinine-based GFR equations were compared in a total of 1621 patients. The cystatin C-based equation with the highest accuracy (94%) had a bias of 3.5 and precision of 18 ml/min per 1.73 m², whereas the most accurate (95%) creatinine-based equation had a bias of 2.9 and precision of 15 ml/min per 1.73 m² The best equation, based on both cystatin C and creatinine, had a bias of 7.6 ml/min per 1.73 m², precision of 15 ml/min per 1.73 m², and accuracy of 92%. Thus, estimates of GFR based on cystatin C were not superior to those based on creatinine in the general population. Hence, the better prediction of cardiovascular disease by cystatin C than creatinine measurements, found by others, may be due to factors other than GFR.
                Bookmark

                Author and article information

                Journal
                sun
                Revista Salud Uninorte
                Salud, Barranquilla
                Fundación Universidad del Norte, División de Ciencias de la (Barranquilla, Atlantico, Colombia )
                0120-5552
                2011-7531
                April 2019
                : 35
                : 1
                : 110-132
                Affiliations
                [1] Boyacá orgnameUniversidad de Boyacá Colombia lauramirez@ 123456uniboyaca.eduxo
                [5] Boyacá orgnameUniversidad de Boyacá Colombia amaguilera@ 123456uniboyaca.edu.co
                [3] Boyacá orgnameUniversidad de Boyacá Colombia dancastillo@ 123456uniboyaca.edu.co
                [4] Antioquía orgnameUniversidad de Antioquia Colombia julio.bueno@ 123456udea.edu.co
                [2] Boyacá orgnameUniversidad de Boyacá Colombia lxalbarracin@ 123456uniboyaca.edu.co
                Article
                S0120-55522019000100110 S0120-5552(19)03500100110
                ad841514-2e99-4ad0-a570-c013280465e4

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 61, Pages: 23
                Product

                SciELO Colombia

                Categories
                Artículos revisión

                Cystatin C,creatinine,diagnosis,acute kidney injury,kidney failure chronic,glomerular filtration rate,cdiagnóstico,lesiónfallo renal crónico

                Comments

                Comment on this article