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Essential polyunsaturated fatty acids, inflammation and mortality in dialysis patients
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för folkhälso- och vårdvetenskap, Klinisk nutrition och metabolism.
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2012 (engelsk)Inngår i: Nephrology, Dialysis and Transplantation, ISSN 0931-0509, E-ISSN 1460-2385, Vol. 27, nr 9, s. 3615-3620Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background. Polyunsaturated fatty acids (PUFA) are essential nutrients with anti-inflammatory and cardioprotective properties. We investigated the association of essential dietary PUFA intake, reflected by plasma fatty acid composition, with inflammation and mortality in dialysis patients.

Methods. We recruited 222 Swedish dialysis subjects (39% women) with median age of 57 years and average 12 months of dialysis vintage. Plasma phospholipid PUFA were assessed by gas-liquid chromatography. Overall mortality was assessed after 18.4 (10th-90th percentiles: 2.3-60) months of follow-up.

Results. Linoleic acid (LA), Mead acid (MA), alpha-linolenic acid (ALA) and long-chain n-3 PUFA (LC n-3; the sum of eicosapentaenoic, docosapentaenoic and docosahexaenoic acids) represented 19.7, 0.26, 0.26 and 7.64% of all fatty acids in plasma, respectively. This may reflect an adequate n-3 PUFA intake. LA was negatively (beta = -0.21, P = 0.004) but MA positively (beta = 0.25, P < 0.001) associated with interleukin (IL)-6 in multivariate analyses. Neither ALA nor LC n-3 were independently associated with IL-6. During follow-up, 61 deaths and 115 kidney transplants occurred. Fully adjusted competing risk models showed that every percent increase in the proportion of plasma LA was associated with 12% reduction in mortality risk before transplantation (hazard ratio 0.88, 95% confidence interval 0.79-0.99). MA was directly associated with mortality. Neither ALA nor LC n-3 predicted outcome.

Conclusions. The proportion of plasma phospholipid LA is inversely associated with IL-6 and all-cause mortality in Swedish dialysis patients. We raise the hypothesis that dialysis patients could benefit from increased intake of vegetable oils, the primary source of LA in the Western-type diet.

sted, utgiver, år, opplag, sider
2012. Vol. 27, nr 9, s. 3615-3620
Emneord [en]
competing risk models, end-stage renal disease, inflammation, mortality, polyunsaturated fatty acids
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-182015DOI: 10.1093/ndt/gfs132ISI: 000308244400038OAI: oai:DiVA.org:uu-182015DiVA, id: diva2:559196
Tilgjengelig fra: 2012-10-08 Laget: 2012-10-02 Sist oppdatert: 2018-02-22bibliografisk kontrollert

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