Hyperlipidemias: Agabiti-Rosei E

Zannad F, Agabiti-Rosei E. · Inserm, CIC 9501 et U684, CHU Nancy, France. · J Hypertens. · Pubmed #18815513 No free full text.

Abstract: In addition to the prevention and treatment of macro- and microvascular complications, management goals for patients with type 2 diabetes include reducing the risk of cardiovascular events with a view to improving quality of life. A number of epidemiological and observational cohort studies have been published in Italy and France in an effort to determine the patient profile of individuals with type 2 diabetes in these countries and to gather data on current clinical practice and prescribing patterns. The results of the studies confirm that cardiovascular risk factors, such as hypertension and elevated cholesterol, commonly occur in patients with type 2 diabetes and that these co-morbid conditions are not well controlled. As a consequence, both macro- and microvascular complications are prevalent in this patient population. It is clear that the management of type 2 diabetes in France and Italy is suboptimal. In both primary and specialist care, treatment guidelines need to be reinforced and a more aggressive approach needs to be adopted in the treatment of modifiable cardiovascular risk factors and in particular hypertension. Collectively, the available data highlight the importance of managing global cardiovascular risk within the context of diabetes care. Greater adherence to therapeutic targets recommended in guidelines will ensure that greater proportions of patients attain these treatment goals thereby reducing diabetes-related morbidity and mortality.

Sirtori CR, Calabresi L, Franceschini G, Baldassarre D, Amato M, Johansson J, Salvetti M, Monteduro C, Zulli R, Muiesan ML, Agabiti-Rosei E. · Center E. Grossi Paoletti, Institute of Pharmacological Sciences, University of Milano, Milan, Italy. · Circulation. · Pubmed #11306522 links to  free full text

Abstract: BACKGROUND: Carriers of the apolipoprotein A-I(Milano) (apoA-I(M)) mutant present with very low plasma HDL cholesterol and moderate hypertriglyceridemia, apparently not leading to premature coronary heart disease. The objective of this study was to establish whether this high-risk lipid/lipoprotein profile is associated with structural changes in the carotid arteries and heart, indicative of preclinical atherosclerosis. METHODS AND RESULTS: Twenty-one A-I(M) carriers were compared with age- and sex-matched control subjects from the same kindred and with 2 series of matched subjects with primary hypoalphalipoproteinemia (HA). Structural changes in the carotid arteries were defined as the intima-media thickness (IMT) measured by B-mode ultrasound. HA subjects, both recruited among patients attending our Lipid Clinic and blood donors, showed significant thickening of the carotids (average IMT, 0.86+/-0.25 and 0.88+/-0.29 mm, respectively) compared with control subjects (average IMT, 0.64+/-0.12 mm); the apoA-I(M) carriers instead showed normal arterial thickness (average IMT, 0.63+/-0.10 mm). Moreover, a significantly higher prevalence of atherosclerotic plaques was found in patients and blood donors with HA (both 57%) compared with apoA-I(M) carriers (33%) and control subjects (21%). Echocardiographic findings and maximal treadmill ECG did not differ significantly between apoA-I(M) carriers and control subjects, apart from a slight increase in left ventricular end-diastolic dimension in the carriers. CONCLUSIONS: Despite severe HA, carriers of the apoA-I(M) mutant do not show structural changes in the arteries and heart, in contrast to HA subjects, who are characterized by a marked increase in carotid IMT and increased prevalence of atherosclerotic plaques.

Paini A, Boutouyrie P, Calvet D, Zidi M, Agabiti-Rosei E, Laurent S. · Department of Pharmacology, Université Paris-Descartes, Faculté de Médecine, INSERM U652, Hôpital Européen Georges Pompidou, Paris, France. · Stroke. · Pubmed #17158335 links to  free full text

Abstract: BACKGROUND AND PURPOSE: Carotid plaque rupture depends on the various types of mechanical stresses. Our objective was to determine the multiaxial mechanical characteristics of atherosclerotic plaque and adjacent segment of the common carotid artery. METHODS: A novel noninvasive echotracking system was used to measure intima-media thickness, diameter, pulsatile strain, and distensibility at 128 sites on a 4-cm long common carotid artery segment. The study included 62 patients with recent cerebrovascular ischemic event and either a plaque on the far wall of common carotid artery (n=25) or no plaque (n=37). RESULTS: The mechanical characteristics of the carotid segment devoid of plaque did not differ between the two groups. Among patients with plaque, 16 had a larger radial strain at the level of plaque than at the level of adjacent common carotid artery (pattern A: outward-bending strain). The eight patients who had an opposite pattern (inward-bending strain) were more often dyslipidemic (100% versus 56% P=0.03) and type 2 diabetic (63% versus 12%, P=0.04) than pattern A patients. Strain gradient significantly decreased in parallel with the presence of dyslipidemia and/or type 2 diabetes. Longitudinal gradients of distensibility and Young's elastic modulus were consistent with strain gradients. CONCLUSIONS: Type 2 diabetes and dyslipidemia were associated with a stiffer carotid at the level of the plaque than in the adjacent common carotid artery leading to an inward-bending stress. The analysis of plaque mechanics along the longitudinal axis may afford useful information, because repetitive bending strain of an atherosclerotic plaque may fatigue the wall material and result in plaque rupture.