Abstract |
The relationship between hypoalphalipoproteinemia (hypoalpha), a metabolic disorder characterized by reduced high-density lipoprotein ( HDL) cholesterol levels, and atherosclerotic disease is not completely understood. We investigated arterial functional and structural changes in 19 subjects with hypoalpha ( HDL cholesterol < or = 0.7 mmol/L for men and < or = 0.8 mmol/L for women; 13 men; 47 +/- 7 years) and in 21 healthy control subjects (11 men; 46 +/- 13 years). Brachial-artery flow-mediated vasodilation (FMV) and intima-media thickness (IMT) of the carotid and femoral arteries were determined in all subjects. FMV was significantly lower in hypoalpha than in controls (5.6% +/- 4.3% v 8.2% +/- 2.7%; P <.05). IMT was greater in hypoalpha than in controls at both the internal carotid (0.83 +/- 0.1 mm v 0.69 +/- 0.1 mm) and superficial femoral level (0.83 +/- 0.2 mm v 0.68 +/- 0.1 mm; both P <.05). FMV had a positive correlation with HDL cholesterol (r =.42, P =.06) and a negative one with triglycerides (r = -0.38, P =.01). An inverse relationship was found between HDL cholesterol and internal carotid and superficial femoral IMT (r = -0.64 and r = -0.60, respectively; P <.01 for both) and a positive one between triglycerides and internal carotid and superficial femoral IMT (r =.53 and r =.47, P <.05). In a multivariate regression analysis, brachial FMV was predicted by HDL cholesterol and brachial diameter (beta =.42 and -0.43, respectively; both P <.05). HDL cholesterol was the only significant predictor of internal carotid and superficial femoral IMT (beta = -0.45 and -0.49, respectively; both P <.05). In conclusion, subjects with primary hypoalpha, without overt cardiovascular disease, are characterized by an impaired endothelial function and by an increase in large-artery IMT.
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Authors | Gaetano Vaudo, Simona Marchesi, Graziana Lupattelli, Matteo Pirro, Leonella Pasqualini, Anna Rita Roscini, Donatella Siepi, Giuseppe Schillaci, Elmo Mannarino |
Journal | Metabolism: clinical and experimental
(Metabolism)
Vol. 52
Issue 3
Pg. 328-32
(Mar 2003)
ISSN: 0026-0495 [Print] United States |
PMID | 12647271
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright 2003, Elsevier Science (USA). All rights reserved. |
Chemical References |
- Cholesterol, HDL
- Lipoproteins, HDL
- Lipoproteins, HDL2
- Lipoproteins, HDL3
- Triglycerides
- Cholesterol
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Topics |
- Adult
- Analysis of Variance
- Body Mass Index
- Brachial Artery
(pathology, physiopathology)
- Carotid Arteries
(pathology)
- Cholesterol
(blood)
- Cholesterol, HDL
(blood)
- Endothelium, Vascular
(physiopathology)
- Female
- Femoral Artery
(pathology)
- Humans
- Lipoproteins, HDL
(blood)
- Lipoproteins, HDL2
- Lipoproteins, HDL3
- Male
- Middle Aged
- Tangier Disease
(complications)
- Triglycerides
(blood)
- Tunica Intima
(pathology)
- Vascular Diseases
(etiology, pathology, physiopathology)
- Vasodilation
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