Abstract:
BACKGROUND/OBJECTIVES:to explore the effect of ageing on renal function with cystatin C as the marker of glomerular filtration rate (GFR) in the general population without vascular disease or diabetes. DESIGN:a cross-sectional analysis of a healthy subset from the Good Aging in Skåne-cohort study representative of the Swedish general population. SUBJECTS:1252 participants without vascular disease and diabetes (43.9% men) of whom 203 were over 80 years old were included from the original cohort of 2931. METHODS:plasma cystatin C and plasma creatinine were used as markers for GFR. Estimated GFR (eGFR) was calculated with three chronic kidney disease epidemiology collaboration (CKD-EPI) formulas involving cystatin C, creatinine or both. RESULTS:the median for plasma cystatin C was 0.93 mg/l (60-69 years old), 1.04 (70-79 years old) and 1.24 (80+ years old). The difference in mg/l between the 5th and 95th percentile was 0.46, 0.62 and 0.90 for these age groups. Male sex increased the age effect on plasma cystatin C levels with 0.004 mg/l/year (P = 0.03), adjusted for vascular risk factors. Smoking, lower HDL and higher diastolic blood pressure were associated with higher cystatin C levels. 54.7% (CKD-EPI creatinine) to 73.9% (CKD-EPI cystatin C) of the 80+ had an eGFR < 60 ml/min/1.73 m2. CONCLUSION:non-diabetics without overt vascular disease exhibit an age related but heterogeneous decline in renal function. The ageing effect is more pronounced in men. At least half of healthy 80+ years old could be expected to have at least CKD Stage 3 with eGFR < 60 ml/min/1.73 m2.
journal_name
Age Ageingjournal_title
Age and ageingauthors
Werner KB,Elmståhl S,Christensson A,Pihlsgård Mdoi
10.1093/ageing/aft191subject
Has Abstractpub_date
2014-05-01 00:00:00pages
411-7issue
3eissn
0002-0729issn
1468-2834pii
aft191journal_volume
43pub_type
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