Serum Cystatin C is a Potential Endogenous Marker for the Estimation of Renal Function in Male Gout Patients with Renal Impairment.
10.3346/jkms.2010.25.1.42
- Author:
Jung Yoon CHOE
1
;
Sung Hoon PARK
;
Seong Kyu KIM
Author Information
1. Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea. kimsk714@cu.ac.kr
- Publication Type:Original Article
- Keywords:
Cystatin C;
Gout;
Creatinine;
Kidney Failure;
Glomerular Filtration Rate
- MeSH:
Age Factors;
Aged;
Allopurinol/therapeutic use;
Area Under Curve;
Biological Markers/metabolism;
Cholesterol, HDL/blood;
Creatinine/blood/urine;
Cystatin C/*blood;
Glomerular Filtration Rate;
Gout/complications/*diagnosis;
Gout Suppressants/therapeutic use;
Humans;
Male;
Middle Aged;
ROC Curve;
Renal Insufficiency/complications/*diagnosis;
Risk Factors
- From:Journal of Korean Medical Science
2010;25(1):42-48
- CountryRepublic of Korea
- Language:English
-
Abstract:
Serum creatinine level is the most commonly used indices for assessment of glomerular filtration rate (GFR), even though these indices have been shown to have some limitations in clinical practice. We investigated the diagnostic efficacy of serum cystatin C compared to that of serum creatinine levels and identified the relating factors associated with changes in serum cystatin C levels in gout patients with renal impairment. A total of 68 gouty patients with renal impairment were enrolled in this study. Diagnostic efficacy of serum cystatin C levels was evaluated through non-parametric receiver operating characteristic (ROC) analysis. The risk factors for changes in serum cystatin C levels were confirmed using multivariate regression analysis. With 24-hr urine creatinine clearance (Ccr) as the reference for GFR, 1/cystatin C (r=0.702, P<0.001) showed a significantly higher correlation with Ccr than 1/creatinine (r=0.665, P<0.001). Multivariate correlation analysis demonstrated that the clinical parameters for increased serum cystatin C are a higher stage of chronic kidney disease, older age, use of allopurinol, and lower high density lipoprotein-cholesterol. The area under the curve (AUC) at ROC plots identified that of serum cystatin C was significantly greater than that of serum creatinine (AUC 0.804 of cystatin C and AUC 0.745 of creatinine). The study suggests that serum cystatin C is a reliable endogenous marker for the assessment of renal function or GFR in gout patients with renal impairment.
