Lipophilic index, kidney function, and kidney function decline
2016 (English)In: NMCD. Nutrition Metabolism and Cardiovascular Diseases, ISSN 0939-4753, E-ISSN 1590-3729, Vol. 26, no 12, 1096-1103 p.Article in journal (Refereed) Published
Background and aims: Unhealthy dietary fats are associated with faster kidney function decline. The cell membrane composition of phospholipid fatty acids (FAs) is a determinant of membrane fluidity and rheological properties. These properties, which have been linked to kidney damage, are thought to be reflected by the lipophilic index (LI). We prospectively investigated the associations of LI with kidney function and its decline. Methods and results: Observational study from the Prospective Investigation of Vasculature in Uppsala Seniors including 975 men and women with plasma phospholipid FAs composition and cystatin-C estimate glomerular filtration rate (eGFR). Of these, 780 attended reexamination after 5 years, and eGFR changes were assessed. Participants with a 5-year eGFR reduction >= 30% were considered chronic kidney disease (CKD) progressors (n = 198). LI was calculated as the sum of the products of the FA proportions with the respective FAs melting points. Blood rheology/viscosity measurements were performed in a random subsample of 559 subjects at baseline. Increased LI showed a statistically significant but overall weak association with blood, plasma viscosity (both Spearman rho = 0.16, p < 0.01), and erythrocyte deformability (rho = -0.09, p < 0.05). In cross-sectional analyses, LI associated with lower eGFR (regression coefficient 3.00 ml/min/1.73 m(2) 1-standard deviation (SD) increment in LI, 95% CI: -4.31, -1.69, p < 0.001). In longitudinal analyses, LI associated with a faster eGFR decline (-2.13 [95% CI -3.58, -0.69] ml/min/1.73 m(2), p < 0.01) and with 32% increased odds of CKD progression (adjusted OR 1.32 [95%, CI 1.05-1.65]). Conclusions: A high LI was associated with lower kidney function, kidney function decline, and CKD progression.
Place, publisher, year, edition, pages
2016. Vol. 26, no 12, 1096-1103 p.
Fatty acids, Lipophilic index, Fluidity, Kidney function, Kidney function decline, CKD progression
Cardiac and Cardiovascular Systems Endocrinology and Diabetes Urology and Nephrology Nutrition and Dietetics
IdentifiersURN: urn:nbn:se:uu:diva-312062DOI: 10.1016/j.numecd.2016.09.006ISI: 000389518200006PubMedID: 27773469OAI: oai:DiVA.org:uu-312062DiVA: diva2:1062175
FunderStockholm County CouncilSwedish Heart Lung FoundationThe Karolinska Institutet's Research Foundation