Abstract:
:In cardiovascular and metabolic diseases, small resistance arteries may show the presence of structural alterations. In particular, in essential hypertension, an increased media-to-lumen ratio of subcutaneous small arteries with no change in the total amount of vascular wall tissue (eutrophic remodelling) has already been described several years ago. Similar alterations have been demonstrated also in patients with diabetes mellitus and obesity; in this case, however, a more evident contribution of vascular smooth muscle cell growth (hypertrophic remodelling) is present. This review addresses the effects of obesity on small resistance artery structure. Similar to diabetic patients, obese patients show an increased media-to-lumen ratio of subcutaneous small arteries, which appears associated with hypertrophic remodelling, as demonstrated by an increase in media cross-sectional area. Endothelial dysfunction evaluated as vasodilator response to acetylcholine has also been observed. Several studies have shown that increased media-to-lumen ratio of subcutaneous small resistance arteries possesses a prognostic significance in relation to cardiovascular outcome. Appropriate antihypertensive treatment may improve microvascular alterations both in essential hypertension and in type 2 diabetes mellitus. In obesity, a pronounced weight loss may improve microvascular structure. However, further studies are needed to elucidate the effects of other pharmacological and non-pharmacological interventions in obesity.
journal_name
Basic Clin Pharmacol Toxicoljournal_title
Basic & clinical pharmacology & toxicologyauthors
Rizzoni D,De Ciuceis C,Porteri E,Semeraro F,Rosei EAdoi
10.1111/j.1742-7843.2011.00786.xsubject
Has Abstractpub_date
2012-01-01 00:00:00pages
56-62issue
1eissn
1742-7835issn
1742-7843journal_volume
110pub_type
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