Yasuhiko Kubota1, Aaron R Folsom2, James S Pankow2, Lynne E Wagenknecht3, Weihong Tang2. 1. Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis. Electronic address: kubot007@umn.edu. 2. Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis. 3. Department of Epidemiology and Prevention, Wake Forest School of Medicine, Winston Salem, NC.
Abstract
PURPOSE: To test the hypothesis that diabetes-related factors (metabolic syndrome [MetS], glucose, insulin, and leptin) are inversely associated with abdominal aortic aneurysm (AAA) risk. METHODS: We followed 13,736 participants, aged 45-64 years, without prior AAA surgery at baseline (1987-1989), for AAA occurrence through 2011. Hazard ratios (HRs) and their 95% confidence intervals (CIs) of AAA were calculated using Cox regression. RESULTS: During 275,054 person-years of follow-up, we identified 518 AAA events. Fasting serum glucose was associated inversely with AAA risk (HR [95% CI] per one unit increment in log2(glucose), 0.54 [0.36-0.80]), but fasting insulin was not associated with AAA. Plasma leptin was also associated inversely with AAA occurrence (HR [95% CI] per one unit increment in log2(leptin), 0.83 [0.71-0.98]). Compared with individuals without MetS, those with MetS had increased risk of AAA (HR [95% CI], 1.24 [1.04-1.48]). Among individuals with or without diabetes, the HRs increased monotonically with a greater number of non-glucose MetS components. CONCLUSIONS: Diabetes, fasting glucose, and plasma leptin were inversely associated with risk of AAA. In contrast, the MetS was associated with increased risk of AAA, due to the influence of the non-glucose MetS components.
PURPOSE: To test the hypothesis that diabetes-related factors (metabolic syndrome [MetS], glucose, insulin, and leptin) are inversely associated with abdominal aortic aneurysm (AAA) risk. METHODS: We followed 13,736 participants, aged 45-64 years, without prior AAA surgery at baseline (1987-1989), for AAA occurrence through 2011. Hazard ratios (HRs) and their 95% confidence intervals (CIs) of AAA were calculated using Cox regression. RESULTS: During 275,054 person-years of follow-up, we identified 518 AAA events. Fasting serum glucose was associated inversely with AAA risk (HR [95% CI] per one unit increment in log2(glucose), 0.54 [0.36-0.80]), but fasting insulin was not associated with AAA. Plasma leptin was also associated inversely with AAA occurrence (HR [95% CI] per one unit increment in log2(leptin), 0.83 [0.71-0.98]). Compared with individuals without MetS, those with MetS had increased risk of AAA (HR [95% CI], 1.24 [1.04-1.48]). Among individuals with or without diabetes, the HRs increased monotonically with a greater number of non-glucose MetS components. CONCLUSIONS:Diabetes, fasting glucose, and plasma leptin were inversely associated with risk of AAA. In contrast, the MetS was associated with increased risk of AAA, due to the influence of the non-glucose MetS components.
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