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Updated: Jun 17, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Omega-3 and renal function in older adults.
F Lauretani1, M Maggio, F Pizzarelli
1Geriatric Unit, Geriatric-Rehabilitation Department, University Hospital of Parma, Parma, Italy. flauretani@ao.pr.it
Higher intake of polyunsaturated fatty acids (PUFA) may protect against chronic kidney disease (CKD) progression. Low plasma PUFA levels in older adults were linked to a faster decline in kidney function over three years.
Area of Science:
- Nephrology
- Nutritional Science
- Epidemiology
Background:
- Chronic kidney disease (CKD) is a significant global health issue, with increasing prevalence and incidence of end-stage renal disease.
- Diabetes and hypertension are primary drivers of kidney damage, while infections and aging-related immune decline also contribute.
- Oxidative stress, an imbalance between free radicals and antioxidants like polyunsaturated fatty acids (PUFA), is implicated in kidney pathology.
Purpose of the Study:
- To investigate the association between plasma polyunsaturated fatty acid (PUFA) levels and the rate of decline in kidney function.
- To determine if higher PUFA levels are protective against the progression of chronic kidney disease (CKD) in older adults.
Main Methods:
- Analysis of total plasma PUFA levels and change in creatinine clearance over a three-year period.
- Utilized data from the InCHIANTI study, a population-based epidemiological study in Tuscany, Italy.
- Focused on an elderly cohort to assess long-term effects on renal function.
Main Results:
- Older adults with lower plasma PUFA levels exhibited a more pronounced decrease in creatinine clearance over the three-year follow-up period.
- This finding suggests a correlation between reduced PUFA levels and accelerated loss of kidney function.
- Previous research indicated PUFA supplementation benefits IgA nephropathy and dialysis patients.
Conclusions:
- Low levels of plasma polyunsaturated fatty acids (PUFA) are associated with a faster decline in kidney function in older adults.
- Increased dietary intake of PUFA may play a protective role in preventing the progression of chronic kidney disease (CKD).
- Further research into PUFA's role in renal health is warranted.
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