N-3 fatty acid supplementation and leukocyte telomere length in patients with chronic kidney disease

Anne Barden, N. O’callaghan, Valerie Burke, E. Mas, Lawrence Beilin, M. Fenech, A.B. Irish, Gerald Watts, Ian Puddey, Rae-Chi Huang, Trevor Mori

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

© 2016 by the authors; licensee MDPI, Basel, Switzerland.DNA telomere shortening associates with the age-related increase cardiovascular disease (CVD) risk. Reducing oxidative stress, could modify telomere erosion during cell replication, and CVD risk in patients with chronic kidney disease (CKD). The effect of n-3 fatty acids and coenzyme Q10 (CoQ) on telomere length was studied in a double-blind placebo-controlled trial in CKD. Eighty-five CKD patients were randomized to: n-3 fatty acids (4 g); CoQ (200 mg); both supplements; or control (4 g olive oil), daily for 8 weeks. Telomere length was measured in neutrophils and peripheral blood mononuclear cells (PBMC) at baseline and 8 weeks, with and without correction for cell counts. Main and interactive effects of n-3 fatty acids and CoQ on telomere length were assessed adjusting for baseline values. F2-isoprostanes were measured as markers of oxidative stress. There was no effect of n-3 fatty acids or CoQ on neutrophil or PBMC telomere length. However, telomere length corrected for neutrophil count was increased after n-3 fatty acids (p = 0.015). Post-intervention plasma F2-isoprostanes were negative predictors of post-intervention telomere length corrected for neutrophil count (p = 0.025).The effect of n-3 fatty acids to increased telomere length corrected for neutrophil count may relate to reduced oxidative stress and increased clearance of neutrophils with shorter telomeres from the circulation. This may be a novel mechanism of modifying CVD risk in CKD patients.
Original languageEnglish
Article number175
Pages (from-to)1-11
Number of pages11
JournalNutrients
Volume8
Issue number3
DOIs
Publication statusPublished - 19 Mar 2016

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