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Gene-Based Elevated Triglycerides and Type 2 Diabetes Mellitus Risk in the Women's Genome Health Study
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Molecular epidemiology. Harvard TH Chan Sch Publ Hlth, Dept Nutr, Boston, MA USA;Harvard Med Sch, Div Prevent Med, Boston, MA USA.
Harvard Med Sch, Div Prevent Med, Boston, MA USA;Harvard Med Sch, Cardiovasc Div, Boston, MA USA;Harvard Med Sch, Ctr Lipid Metabol, Boston, MA USA.
Harvard Med Sch, Div Prevent Med, Boston, MA USA;Harvard Med Sch, Cardiovasc Div, Boston, MA USA;Harvard Med Sch, Ctr Lipid Metabol, Boston, MA USA.
Harvard TH Chan Sch Publ Hlth, Dept Nutr, Boston, MA USA;Harvard Med Sch, Brigham & Womens Hosp, Dept Med, Div Network Med, Boston, MA USA.
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2019 (English)In: Arteriosclerosis, Thrombosis and Vascular Biology, ISSN 1079-5642, E-ISSN 1524-4636, Vol. 39, no 1, p. 97-106Article in journal (Refereed) Published
Abstract [en]

Objective- Higher triglyceride (TG) is a risk factor for incident type 2 diabetes mellitus (T2DM), but paradoxically, genetic susceptibility for higher TG has been associated with lower T2DM risk. There is also evidence that the genetic association may be modified by baseline TG. Whether such associations can be replicated and the interaction is selective for certain TG-rich lipoprotein particles remains to be explored.

Approach and Results-Cox regression involving TG, TG-rich lipoprotein particles, and genetic determinants of TG was performed among 15 813 participants with baseline fasting status in the WGHS (Women's Genome Health Study), including 1453 T2DM incident cases during a mean 18.6 (SD= 5.3) years of follow-up. A weighted, 40-single-nucleotide polymorphism TG genetic risk score was inversely associated with incident T2DM (hazard ratio [95% CI], 0.66 [0.580.75]/ 10-TG risk alleles; P< 0.0001) with adjustment for baseline body mass index, HDL (high-density lipoprotein) cholesterol, and TG. TG-associated risk was higher among individuals in the low compared with the high 40-singlenucleotide polymorphism TG genetic risk score tertile (hazard ratio [95% CI], 1.98 [1.83-2.14] versus 1.68 [1.58-1.80] per mmol/L; P-interaction = 0.0007). In TG-adjusted analysis, large and medium but not small TG-rich lipoprotein particles were associated with higher T2DM incidence for successively lower 40-single-nucleotide polymorphism TG genetic risk score tertiles, P-interaction = 0.013, 0.012, and 0.620 across tertiles, respectively.

Conclusions-Our results confirm the previous observations of the paradoxical associations of TG with T2DM while focusing attention on the larger TG-rich lipoprotein particle subfractions, suggesting their importance in clinical profiling of T2DM risk.

Place, publisher, year, edition, pages
2019. Vol. 39, no 1, p. 97-106
Keywords [en]
diabetes mellitus, type 2, genetic predisposition, lipid metabolism, lipoproteins, VLDL, triglycerides
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:uu:diva-398546DOI: 10.1161/ATVBAHA.118.311562ISI: 000454313300015PubMedID: 30565958OAI: oai:DiVA.org:uu-398546DiVA, id: diva2:1377005
Funder
Swedish Heart Lung Foundation, 20150711Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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