Document Detail

Urinary albumin excretion is associated with impaired flow- and nitroglycerin-mediated brachial artery dilatation in hypertensive adults.
MedLine Citation:
PMID:  17230233     Owner:  NLM     Status:  MEDLINE    
We investigated whether the urinary albumin/creatinine ratio (UACR), a measure of albuminuria, is associated with non-invasive measures of arterial function in hypertensive adults without known coronary heart disease (CHD) or stroke. UACR was measured in the first voided morning urine sample in 469 non-Hispanic white hypertensive individuals (mean age 62.2+/-9.8 years, 41% men) belonging to hypertensive sibships. High-resolution ultrasonography of the brachial artery was used to assess flow-mediated dilatation (FMD)--an endothelium-dependent response--and nitroglycerin-mediated dilatation (NMD)--an endothelium-independent response. Because of skewed distribution, UACR was log transformed after addition of 0.1. The association of log (UACR+0.1) with FMD and NMD, before and after adjustment for CHD risk factors, serum creatinine, and hypertension medication and statin use was assessed using linear regression analyses. In univariable analyses, variables associated with lower FMD were greater age, male sex, history of smoking, lower high-density lipoprotein (HDL) cholesterol, higher serum creatinine and higher log (UACR+0.1); variables associated with lower NMD were greater age, male sex, higher systolic blood pressure, lower HDL cholesterol, higher serum creatinine and higher log (UACR+0.1). In separate stepwise multivariable regression analyses that adjusted for conventional CHD risk factors, serum creatinine and hypertension medication and statin use, higher log (UACR+0.1) was associated with lower brachial artery FMD (P=0.035) and NMD (P=0.0002). These findings highlight the association of increased urinary albumin excretion with impaired vascular reactivity in hypertensive individuals.
A R Malik; S Sultan; S T Turner; I J Kullo
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Publication Detail:
Type:  Journal Article; Multicenter Study; Research Support, N.I.H., Extramural     Date:  2007-01-18
Journal Detail:
Title:  Journal of human hypertension     Volume:  21     ISSN:  0950-9240     ISO Abbreviation:  J Hum Hypertens     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-02-15     Completed Date:  2007-04-03     Revised Date:  2007-12-03    
Medline Journal Info:
Nlm Unique ID:  8811625     Medline TA:  J Hum Hypertens     Country:  England    
Other Details:
Languages:  eng     Pagination:  231-8     Citation Subset:  IM    
Division of Cardiovascular Diseases, Mayo Clinic and Foundation, Rochester, MN 55905, USA.
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MeSH Terms
Albuminuria / diagnosis,  epidemiology,  urine*
Brachial Artery / drug effects,  physiopathology*,  ultrasonography
Hypertension / diagnosis,  epidemiology,  physiopathology*
Mass Screening
Middle Aged
Minnesota / epidemiology
Multivariate Analysis
Nitroglycerin / diagnostic use*
Predictive Value of Tests
Regression Analysis
Risk Factors
Sex Distribution
Vasodilation / drug effects*
Grant Support
Reg. No./Substance:

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