Abstract | BACKGROUND: The growing burden and morbidity of chronic kidney disease (CKD) warrant effective strategies for identifying those at increased risk. We examined the association of cystatin C level and albuminuria with the development of CKD stage 3. STUDY DESIGN: Prospective observational study. SETTING & PARTICIPANTS: 5,422 participants from the Multi-Ethnic Study of Atherosclerosis (MESA) with estimated glomerular filtration rate (eGFR) ≥60 mL/min/1.73 m(2). PREDICTOR: Participants were categorized into 4 mutually exclusive groups: the presence or absence of microalbuminuria ( albumin- creatinine ratio >17 and >25 μg/mg in men and women, respectively) in those with or without cystatin C level ≥1.0 mg/L. OUTCOMES & MEASUREMENTS: Incident CKD stage 3 was defined as eGFR <60 mL/min/1.73 m(2) at the third or fourth visit and an annual decrease >1 mL/min/1.73 m(2). Poisson regression was used to evaluate incident rate ratios in unadjusted and adjusted analyses that include baseline eGFR. RESULTS: Mean age was 61 years, 49% were men, 38% were white, 11% had diabetes, 13.7% had cystatin C level ≥1 mg/L, 8.4% had microalbuminuria, and 2.7% had cystatin C level ≥1 mg/L with microalbuminuria. 554 (10%) participants developed CKD stage 3 during a median follow-up of 4.7 years, and adjusted incidence rate ratios were 1.57 (95% CI, 1.19-2.07), 1.37 (95% CI, 1.13-1.66), and 2.12 (95% CI, 1.61-2.80) in those with microalbuminuria, cystatin C level ≥1 mg/L, and both, respectively, compared with those with neither. LIMITATIONS: Relatively short follow-up and absence of measured GFR. CONCLUSIONS:
Cystatin C level and microalbuminuria are independent risk factors for incident CKD stage 3 and could be useful as screening tools to identify those at increased risk.
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Authors | Shani Shastri, Ronit Katz, Michael G Shlipak, Bryan Kestenbaum, Carmen A Peralta, Holly Kramer, David R Jacobs Jr, Ian H de Boer, Mary Cushman, David Siscovick, Mark J Sarnak |
Journal | American journal of kidney diseases : the official journal of the National Kidney Foundation
(Am J Kidney Dis)
Vol. 57
Issue 6
Pg. 832-40
(Jun 2011)
ISSN: 1523-6838 [Electronic] United States |
PMID | 21296473
(Publication Type: Comparative Study, Journal Article, Multicenter Study, Research Support, N.I.H., Extramural)
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Copyright | Copyright © 2011 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved. |
Chemical References |
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Topics |
- Aged
- Aged, 80 and over
- Albuminuria
(blood, complications, ethnology)
- Biomarkers
(blood)
- Cystatin C
(blood)
- Disease Progression
- Ethnicity
- Female
- Follow-Up Studies
- Glomerular Filtration Rate
(physiology)
- Humans
- Kidney Failure, Chronic
(blood, ethnology, etiology)
- Male
- Middle Aged
- Nephelometry and Turbidimetry
- Prognosis
- Retrospective Studies
- Risk Factors
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