Homocysteine as a determinant of left ventricular ejection fraction in patients with diabetes
-
Stephanie Badiou
Abstract
Background: A link between homocysteine (Hcy) and left ventricular ejection fraction (LVEF) emerged from recent studies but was yet not explored specifically in diabetic patients. This study aimed to assess the relationship between LVEF and Hcy in a cohort of adults with diabetes.
Methods: LVEF was determined through the measure of left ventricular end-diastolic/end-systolic volumes in 409 consecutive asymptomatic patients with diabetes who underwent stress myocardial perfusion imaging. Clinical and biological parameters which were determinants of LVEF in univariate analyses with p<0.15 were included in a multivariate analysis.
Results: In univariate analyses, factors significantly associated with a LVEF<55% were gender [women vs. men, odds ratio (OR)=0.22 (0.13; 0.38)], peripheral arterial disease [OR=2.49 (1.34; 4.62)], active smoking [OR=1.97 (1.16; 3.33)], silent myocardial ischemia (SMI) [OR=2.19 (1.25; 3.86)], the highest vs. the lowest tertile of creatinine [OR=2.08 (1.17; 3.68)], of albuminuria [OR=2.22 (1.27; 3.90)] and of Hcy [OR=1.83 (1.07; 3.13)]. No relationship was observed between blood pressure and decrease in LVEF. In the multivariate analysis, female gender was confirmed as being protective for having a LVEF<55%. Presence of SMI [OR=2.20 (1.14; 4.23)] and Hcy ≥15 μmol/L [OR=1.81 (1.06; 3.07)] were the two remaining significant factors associated with an increased relative risk of having LVEF<55%. A trend was only observed for the criteria active smokers.
Conclusions: This study highlights an inverse relationship between Hcy and LVEF in patients with diabetes, independent of age, gender, SMI, smoking, blood pressure, renal function, folates, vitamin B12, lipid parameters and hepatic enzymes.
©2012 by Walter de Gruyter Berlin Boston
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