Document Detail


Non-invasive assessment of endothelial function - relation between vasodilatory responses in skin microcirculation and brachial artery.
MedLine Citation:
PMID:  15522039     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To compare different non-invasive methods for determination of human endothelial function in peripheral circulation. DESIGN: Observational, cross-sectional study in 39 healthy subjects (21 females, age 17-56 years). SETTING: Vascular research laboratory at university hospital. METHODS: Laser Doppler (LD) flowmetry was used to compare skin microvascular perfusion changes during postocclusive reactive hyperaemia with those induced by iontophoretic administration of acetylcholine (ACh), an endothelial-dependent vasodilator. LD measurements were compared with ultrasonographic measurements of postocclusive flow-mediated dilatation (FMD) in the brachial artery (n = 21). RESULTS: Local ACh induced a larger and more sustained skin perfusion increase than reactive hyperaemia after 4 min of regional arterial occlusion (P<0.001). A significant correlation was found between the magnitude of ACh-induced vasodilatation and peak reactive hyperaemia, both in absolute (r = 0.62, P<0.001) and relative terms (r = 0.58, P<0.001). A correlation was also found between brachial artery FMD and the magnitude of ACh-induced skin perfusion increase (r = 0.43, P<0.05) but not between FMD and reactive hyperaemia. CONCLUSION: Endothelial function, an early marker of cardiovascular risk, can be non-invasively assessed and graded by LD and FMD-measurements and despite inherent differences, both methods do correlate.
Authors:
Jimmy Hansell; Loghman Henareh; Stefan Agewall; Mikael Norman
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Clinical physiology and functional imaging     Volume:  24     ISSN:  1475-0961     ISO Abbreviation:  Clin Physiol Funct Imaging     Publication Date:  2004 Nov 
Date Detail:
Created Date:  2004-11-03     Completed Date:  2005-02-15     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  101137604     Medline TA:  Clin Physiol Funct Imaging     Country:  England    
Other Details:
Languages:  eng     Pagination:  317-22     Citation Subset:  IM    
Affiliation:
Department of Women and Child Health, Huddinge University Hospital, Stockholm, Sweden. hansell@swipnet.se
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Brachial Artery / physiology*,  ultrasonography*
Endothelium, Vascular / physiology*,  ultrasonography*
Female
Humans
Laser-Doppler Flowmetry / methods*
Male
Microcirculation / physiology,  ultrasonography
Middle Aged
Reproducibility of Results
Sensitivity and Specificity
Skin / blood supply*,  ultrasonography*
Statistics as Topic
Vasodilation / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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