Plasma and dietary linoleic acid and 3-year risk of type 2 diabetes after myocardial infarction: A prospective analysis in the alpha omega cohort

Kamalita Pertiwi*, Anne J. Wanders, Marjolein C. Harbers, Leanne K. Kuepers, Sabita S. Soedamah-Muthu, Janette de Goede, Peter L. Zock, Johanna M. Geleijnse

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Oblective 

To study plasma and dietary linoleic acid (LA) in relation to type 2 diabetes risk in post-myocardial infarction (MI) patients. 

Research design and methods

We included 3,257 patients aged 60-80 years (80% male) with a median time since MI of 3.5 years from the Alpha Omega Cohort and who were initially free of type 2 diabetes. At baseline (2002-2006), plasma LA was measured in cholesteryl esters, and dietary LA was estimated with a 203-item food-frequency questionnaire. Incident type 2 diabetes was ascertained through self-reported physician diagnosis and medication use. Hazard ratios (with 95% CIs) were calculated by Cox regressions, in which dietary LA isocalorically replaced the sum of saturated (SFA) and trans fatty acids (TFA). 

Results

Mean +/- SD circulating and dietary LA was 50.1 +/- 4.9% and 5.9 +/- 2.1% energy, respectively. Plasma and dietary LA were weakly correlated (Spearman r = 0.13, P <0.001). During a median follow-up of 41 months, 171 patients developed type 2 diabetes. Plasma LA was inversely associated with type 2 diabetes risk (quintile [Q]5 vs. Q1: 0.44 [0.26, 0.75]; per 5%: 0.73 [0.62, 0.86]). Substitution of dietary LA for SFA+TFA showed no association with type 2 diabetes risk (Q5 vs. Q1: 0.78 [0.36, 1.72]; per 5% energy: 1.18 [0.59, 2.35]). Adjustment for markers of de novo lipogenesis attenuated plasma LA associations. 

Conclusions 

In our cohort of post-MI patients, plasma LA was inversely related to type 2 diabetes risk, whereas dietary LA was not related. Further research is needed to assess whether plasma LA indicates metabolic state rather than dietary LA in these patients.

Original languageEnglish
Pages (from-to)358-365
JournalDiabetes Care: The Journal of Clinical and Applied Research and Education
Volume43
Issue number2
DOIs
Publication statusPublished - Feb 2020

Keywords

  • FOOD-FREQUENCY QUESTIONNAIRE
  • FATTY-ACIDS
  • CARDIOVASCULAR RISK
  • OMEGA-3-FATTY-ACIDS
  • PREDICTORS
  • BIOMARKER
  • VALIDITY
  • CANCER
  • BLOOD

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