Fatty fish intake decreases lipids related to inflammation and insulin signaling: A lipidomics approach

Maria Lankinen, Ursula Schwab, Anja Erkkilä, Tuulikki Seppänen-Laakso, Marja-Leena Hannila, Hanna Mussalo, Seppo Lehto, Matti Uusitupa, Helena Gylling, Matej Orešič (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    99 Citations (Scopus)

    Abstract

    Background

    The evidence of the multiple beneficial health effects of fish consumption is strong, but physiological mechanisms behind these effects are not completely known. Little information is available on the effects of consumption of different type of fish. The aim of this study was to investigate how fatty fish or lean fish in a diet affect serum lipidomic profiles in subjects with coronary heart disease.

    Methodology and Principal Findings

    A pilot study was designed which included altogether 33 subjects with myocardial infarction or unstable ischemic attack in an 8-week parallel controlled intervention. The subjects were randomized to either fatty fish (n = 11), lean fish (n = 12) or control (n = 10) groups. Subjects in the fish groups had 4 fish meals per week and subjects in the control group consumed lean beef, pork and chicken. A fish meal was allowed once a week maximum. Lipidomics analyses were performed using ultra performance liquid chromatography coupled to electrospray ionization mass spectrometry and gas chromatography. Multiple bioactive lipid species, including ceramides, lysophosphatidylcholines and diacylglycerols, decreased significantly in the fatty fish group, whereas in the lean fish group cholesterol esters and specific long-chain triacylglycerols increased significantly (False Discovery Rate q-value <0.05).

    Conclusions/Significance

    The 8-week consumption of fatty fish decreased lipids which are potential mediators of lipid-induced insulin resistance and inflammation, and may be related to the protective effects of fatty fish on the progression of atherosclerotic vascular diseases or insulin resistance.

    Original languageEnglish
    Article numbere5258
    Number of pages9
    JournalPLoS ONE
    Volume4
    Issue number4
    DOIs
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed

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