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Assessment of Risk Factors and Biomarkers Associated With Risk of Cardiovascular Disease Among Women Consuming a Mediterranean Diet
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Molekylär epidemiologi. Harvard Med Sch, Brigham & Womens Hosp, Prevent Med Div, Boston, MA 02215 USA;Harvard Med Sch, Brigham & Womens Hosp, Ctr Lipid Metabol, 900 Commonwealth Ave, Boston, MA 02215 USA;Harvard TH Chan Sch Publ Hlth, Dept Nutr, Boston, MA USA;Harvard Med Sch, Brigham & Womens Hosp, Cardiovasc Div, Boston, MA 02215 USA.
Harvard Med Sch, Brigham & Womens Hosp, Prevent Med Div, Boston, MA 02215 USA;Harvard Med Sch, Brigham & Womens Hosp, Ctr Lipid Metabol, 900 Commonwealth Ave, Boston, MA 02215 USA.
Harvard Med Sch, Brigham & Womens Hosp, Prevent Med Div, Boston, MA 02215 USA;Harvard Med Sch, Brigham & Womens Hosp, Cardiovasc Div, Boston, MA 02215 USA.
Harvard TH Chan Sch Publ Hlth, Dept Nutr, Boston, MA USA;Brigham & Womens Hosp, Dept Med, Channing Div Network Med, 75 Francis St, Boston, MA 02115 USA;Harvard Med Sch, Boston, MA 02215 USA.
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2018 (Engelska)Ingår i: JAMA NETWORK OPEN, ISSN 2574-3805, Vol. 1, nr 8, artikel-id e185708Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

IMPORTANCE Higher Mediterranean diet (MED) intake has been associated with lower risk of cardiovascular disease (CVD), but limited data are available about the underlying molecular mechanisms of this inverse disease association in human populations.

OBJECTIVE To better characterize the relative contribution of traditional and novel factors to the MED-related risk reduction in CVD events in a US population.

DESIGN, SETTING, AND PARTICIPANTS Using a prospective cohort design, baseline MED intake was assessed in 25 994 initially healthy US women in theWomen's Health Study who were followed up to 12 years. Potential mediating effects of a panel of 40 biomarkers were evaluated, including lipids, lipoproteins, apolipoproteins, inflammation, glucose metabolism and insulin resistance, branched-chain amino acids, small-molecule metabolites, and clinical factors. Baseline study information and samples were collected between April 30, 1993, and January 24, 1996. Analyses were conducted between August 1, 2017, and October 30, 2018.

EXPOSURES Intake of MED is a 9-category measure of adherence to a Mediterranean dietary pattern. Participants were categorized into 3 levels based on their adherence to the MED.

MAIN OUTCOMES AND MEASURES Incident CVD confirmed through medical records and the proportion of CVD risk reduction explained by mediators.

RESULTS Among 25 994women (mean [SD] age, 54.7 [7.1] years), those with low, middle, and upper MED intakes composed 39.0%, 36.2%, and 24.8% of the study population and experienced 428 (4.2%), 356 (3.8%), and 246 (3.8%) incident CVD events, respectively. Compared with the reference group who had low MED intake, CVD risk reductions were observed for the middle and upper groups, with respective HRs of 0.77 (95% CI, 0.67-0.90) and 0.72 (95% CI, 0.61-0.86) (P for trend < .001). The largest mediators of the CVD risk reduction of MED intake were biomarkers of inflammation (accounting for 29.2% of the MED-CVD association), glucose metabolism and insulin resistance (27.9%), and body mass index (27.3%), followed by blood pressure (26.6%), traditional lipids (26.0%), high-density lipoprotein measures (24.0%) or very low-density lipoprotein measures (20.8%), with lesser contributions from low-density lipoproteins (13.0%), branched-chain amino acids (13.6%), apolipoproteins (6.5%), or other small-molecule metabolites (5.8%).

CONCLUSIONS AND RELEVANCE In this study, higher MED intake was associated with approximately one-fourth relative risk reduction in CVD events, which could be explained in part by known risk factors, both traditional and novel.

Ort, förlag, år, upplaga, sidor
AMER MEDICAL ASSOC , 2018. Vol. 1, nr 8, artikel-id e185708
Nationell ämneskategori
Kardiologi
Identifikatorer
URN: urn:nbn:se:uu:diva-376897DOI: 10.1001/jamanetworkopen.2018.5708ISI: 000456295400002PubMedID: 30646282OAI: oai:DiVA.org:uu-376897DiVA, id: diva2:1288332
Forskningsfinansiär
Hjärt-Lungfonden, 20150711Hjärt-Lungfonden, 20170988Tillgänglig från: 2019-02-13 Skapad: 2019-02-13 Senast uppdaterad: 2019-02-13Bibliografiskt granskad

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