Association of Selected Risk Factors with the Severity of Atherosclerotic Disease at the Carotid Bifurcation

Authors: D. Václavík 1;  D. Školoudík 2;  O. Škoda 3;  P. Praks 4;  K. Axmanová 1;  I. Vlachová 5
Authors‘ workplace: Neurologické oddělení, Vítkovická nemocnice a. s., Ostrava 1;  Neurologická klinika FNsP Ostrava-Poruba 2;  Neurologické oddělení, Nemocnice Pelhřimov 3;  Katedra matematiky VŠB-TU Ostrava 4;  Neurologická klinika LF UP a FN Olomouc 5
Published in: Cesk Slov Neurol N 2008; 71/104(3): 285-292
Category: Original Paper


In addition to standard risk factors of atherosclerosis such as cholesterol, arterial hypertension, smoking and diabetes mellitus, also the role of other risk factors in the development of atherosclerosis has been studied in recent years.  The goal of the study was to find the differences between the levels of apolipoprotein B, homocysteine, hypersensitive CRP and lipoprotein(a) in patients with initial atherosclerotic affection of the carotid arteries in the presence of atherosclerotic plaques only, and in patients with significant carotid artery disease, with internal carotid stenosis exceeding 50 %.  

Study material:
Group 1 consisted of 92 patients with atherosclerotic plaque in carotid arteries without the presence of arterial stenosis. Group 2 consisted of 77 patients with carotid artery stenosis exceeding 50 %. Ultrasound examination was used to ascertain the degree of affection of the carotid arteries.

Samples for the above factors were taken in both groups and compared between each other with linear regressive analysis being performed at the next stage in order to assess the dependence on standard risk factors.

The groups were compared using the Mann-Whitney (Wilcoxon) W test. Significantly higher levels of hypersensitive GRP (p = 0.026) and apolipoprotein B (p = 0.00063) were found in Group 2. Subsequent linear regressive analysis performed with the use of the general linear model and evaluation using the ANOVA test showed the independence of both apolipoprotein B and hypersensitive CRP from standard risk factors (arterial hypertension, age, smoking, and diabetes mellitus).

In our study, apolipoprotein B and hypersensitive CRP was significantly higher in patients with carotid artery stenosis as compared with patients who had atherosclerotic plaques only in their carotid arteries, without the presence of stenosis.

Key words:
carotid arteries – atherosclerotic plaque – homocysteine – hypersensitive CRP – apolipoprotein B – lipoprotein(a)


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