Journal
CLINICAL AND EXPERIMENTAL NEPHROLOGY
Volume 24, Issue 5, Pages 435-443Publisher
SPRINGER
DOI: 10.1007/s10157-019-01842-2
Keywords
High-normal albuminuria; Normal kidney function; Chronic kidney disease
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Background Albuminuria and estimated glomerular filtration rate (eGFR) are clinically measured to evaluate the severity of chronic kidney disease (CKD). The aim of our study was to clarify the association between clinical parameters, including albuminuria and eGFR, and the risk of incident CKD in a nondiabetic population with normal range of albuminuria and eGFR. Methods A 10-year follow-up, retrospective cohort study involving 317 Japanese men (mean age, 42 years) with eGFR >= 90 mL/min/1.73 m(2) and urine albumin-to-creatinine ratio (UACR) < 30 mg/gCr was performed. Participants were free of diabetes mellitus. Multivariate logistic regression approaches were used to assess independent predictors of the incidence of CKD. Results Twenty-nine (9%) participants developed CKD (eGFR < 60 mL/min/1.73 m(2) and/or UACR >= 30 mg/gCr) through 10 years of follow-up. At the baseline examination, age, blood pressure, UACR, and eGFR were higher in participants who developed CKD than in those without CKD. After adjustment for confounders, high-normal albuminuria (P < 0.001) and hypertension (P = 0.045) were associated with an increased incidence of CKD. From receiver-operating characteristic curves, UACR >= 7.0 mg/gCr was defined as high-normal albuminuria. Logistic regression analysis also showed that, in addition to presence of hypertension, UACR >= 7.0 mg/gCr was identified as an independent risk of incident CKD within 10 years after adjustment for age, body mass index, smoking status, and dyslipidemia [UACR: odds ratio (OR) 17.36 (95% CI 6.16-48.93, P < 0.001)]. Conclusion High-normal albuminuria and hypertension are associated with incident CKD in a nondiabetic population with normal-range UACR and eGFR.
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