Published online before print October 31, 2002, doi: 10.1161/01.STR.0000036092.23649.2E
(Stroke. 2002;33:2845.)
© 2002 American Heart Association, Inc.
Original Contributions |
Low Concentration of Serum Total Cholesterol Is Associated With Multifocal Signal Loss Lesions on Gradient-Echo Magnetic Resonance Imaging
Analysis of Risk Factors for Multifocal Signal Loss Lesions
From the Department of Neurology (S.-H.L., B.-W.Y., D.-E.K., J.-K.R.) and School of Public Health (H.K.), Seoul National University; Department of Neurology, Eulji Medical Center (H.-J.B.); and Neuroscience Research Institute, SNUMRC, and Clinical Research Institute, SNUH (S.-H.L., B.-W.Y., D.-E.K., J.-K.R.), Seoul, Korea.
Correspondence to Byung-Woo Yoon, Department of Neurology, Seoul National University Hospital, 28 Yongon-dong, Chongno-gu, Seoul, 110-744, Korea. E-mail bwyoon{at}snu.ac.kr
Background and Purpose— Multifocal signal loss lesions (MSLLs) on T2*-weighted gradient-echo (GE) MRI are believed to be microbleeds histopathologically. Previous epidemiological studies suggested that low serum cholesterol is associated with the increased risk of intracerebral hemorrhage. We investigated risk factors of MSLLs and the relationship between lipid profiles and MSLLs on GE-MRI.
Methods— We included consecutively 172 patients who underwent brain MRI. MSLLs on GE-MRI were counted by 2 neurologists separately and graded by consensus. The concentrations of lipid profiles were categorized as quartiles, and the MSLLs were graded as absent (total count, 0), mild (1 to 2), moderate (3 to 10), and severe (>10).
Results— The mean concentrations of total cholesterol and low-density lipoprotein cholesterol were significantly lower in patients with a severe degree of MSLLs than in those without MSLL (P<0.05). By multivariate analysis, MSLLs were significantly correlated with hypertension (odds ratio [OR], 3.42; 95% CI, 1.17 to 9.97), leukoaraiosis (OR, 4.62; 95% CI, 2.87 to 7.41), the lowest quartile of serum total cholesterol (<4.27 mmol/L; OR, 10.91; 95% CI, 3.98 to 25.57), and the highest quartile of high-density lipoprotein (>1.47 mmol/L; OR, 3.5; 95% CI, 1.45 to 8.29).
Conclusions— Our results suggest that both the lipid profile levels and the severity of hypertension may be closely associated with MSLLs on GE-MRI.
Key Words: cholesterol • intracerebral hemorrhage • magnetic resonance imaging
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