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JAMA. 2008 Nov 12;300(18):2142-52.
Nonfasting triglycerides and risk of ischemic stroke in the general
population.
Freiberg JJ, Tybjaerg-Hansen A, Jensen JS, Nordestgaard BG.
Department of Clinical Biochemistry, Herlev Hospital, DK-2730 Herlev, Denmark.
CONTEXT: The role of triglycerides in the risk of ischemic stroke remains controversial. Recently, a strong association was found between elevatedlevels of nonfasting triglycerides, which indicate the presence of remnant
lipoproteins, and increased risk of ischemic heart disease. OBJECTIVE: To
test the hypothesis that increased levels of nonfasting triglycerides are
associated with ischemic stroke in the general population. DESIGN, SETTING,
AND PARTICIPANTS: The Copenhagen City Heart Study, a prospective, Danish
population-based cohort study initiated in 1976, with follow-up through
July 2007. Participants were 13,956 men and women aged 20 through 93 years.
A cross-sectional study included 9637 individuals attending the 1991-1994
examination of the prospective study. MAIN OUTCOME MEASURES: Prospective
study: baseline levels of nonfasting triglycerides, other risk factors at
baseline and at follow-up examinations, and incidence of ischemic stroke.
Cross-sectional study: levels of nonfasting triglycerides, levels of
remnant cholesterol, and prevalence of ischemic stroke. RESULTS: Of the
13,956 participants in the prospective study, 1529 developed ischemic
stroke. Cumulative incidence of ischemic stroke increased with increasing
levels of nonfasting triglycerides (log-rank trend, P < .001). Men with
elevated nonfasting triglyceride levels of 89 through 176 mg/dL had
multivariate-adjusted hazard ratios (HRs) for ischemic stroke of 1.3 (95%
CI, 0.8-1.9; 351 events); for 177 through 265 mg/dL, 1.6 (95% CI, 1.0-2.5;
189 events); for 266 through 353 mg/dL, 1.5 (95% CI, 0.9-2.7; 73 events);
for 354 through 442 mg/dL, 2.2 (95% CI, 1.1-4.2; 40 events); and for 443
mg/dL or greater, 2.5 (95% CI, 1.3-4.8; 41 events) vs men with nonfasting
levels less than 89 mg/dL (HR, 1.0; 85 events) (P < .001 for trend).
Corresponding values for women were 1.3 (95% CI, 0.9-1.7; 407 events), 2.0
(95% CI, 1.3-2.9; 135 events), 1.4 (95% CI, 0.7-2.9; 26 events), 2.5 (95%
CI, 1.0-6.4; 13 events), and 3.8 (95% CI, 1.3-11; 10 events) vs women with
nonfasting triglyceride levels less than 89 mg/dL (HR, 1.0; 159 events) (P
< .001 for trend). Absolute 10-year risk of ischemic stroke ranged from
2.6% in men younger than 55 years with nonfasting triglyceride levels of
less than 89 mg/dL to 16.7% in men aged 55 years or older with levels of
443 mg/dL or greater. Corresponding values in women were 1.9% and 12.2%. In
the cross-sectional study, men with a previous ischemic stroke vs controls
had nonfasting triglyceride levels of 191 (IQR, 131-259) mg/dL vs 148 (IQR,
104-214) mg/dL (P < .01); corresponding values for women were 167 (IQR,
121-229) mg/dL vs 127 (IQR, 91-181) mg/dL (P < .05). For remnant
cholesterol, corresponding values were 38 (IQR, 26-51) mg/dL vs 29 (IQR,
20-42) mg/dL in men (P < .01) and 33 (IQR, 24-45) mg/dL vs 25 (IQR, 18-35)
mg/dL in women (P < .05). CONCLUSION: In this study population, nonfasting
triglyceride levels were associated with risk of ischemic stroke.
PMID: 19001625 [PubMed - indexed for MEDLINE]
PMID: 19001625 [PubMed - indexed for MEDLINE]