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The diagnostic performance of mid-regional portion of pro-atrial natriuretic peptide for the detection of left ventricular hypertrophy in Caucasian hypertensive patients.
MedLine Citation:
PMID:  22113442     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Left ventricular hypertrophy (LVH) is predictive of cardiovascular disease. The vasodilator, natriuretic and diuretic actions of atrial natriuretic peptide (ANP) support a role in the pathophysiology of hypertension. Measuring the redundant precursor fragment mid-regional portion of pro-atrial natriuretic peptide (MRproANP) overcomes the technical difficulties of quantifying the bioactive ANP. This study sought to investigate the diagnostic and prognostic utility of MRproANP in a hypertensive Caucasian patient population. A total of 194 hypertensive patients (39 patients with LVH, 69±7.82 years of age, 74% female vs 155 patients without LVH, 68±6.51 years of age, 71% female) were derived from a screening study. Plasma MRproANP concentrations were quantified using immunoluminometric assays. Hypertensive patients with LVH had higher MRproANP concentrations than those without LVH (103.04 (50.58) vs 84.11 pmol l(-1) (44.82); P=0.014). Independent predictors of left ventricular mass index were LogMRproANP (P=0.022), male gender (P<0.001), body mass index (P=0.001) and history of angina or myocardial infarction (P=0.009). The receiver operating curve for MRproANP for the detection of LVH was limited, yielding an area under the curve of only 0.628 (confidence interval 0.523-0.733; P=0.014). Therefore, the role of MRproANP may not lie in the diagnosis of LVH but in monitoring the response to therapy. A nonsignificant trend towards greater mortality in patients with above-median MRproANP levels compared with below-median levels (P=0.167) was observed. Larger studies are required to assess its prognostic utility further.Journal of Human Hypertension advance online publication, 24 November 2011; doi:10.1038/jhh.2011.101.
Authors:
S S Bhandari; J E Davies; J Struck; L L Ng
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-24
Journal Detail:
Title:  Journal of human hypertension     Volume:  -     ISSN:  1476-5527     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8811625     Medline TA:  J Hum Hypertens     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1] Department of Cardiovascular Sciences, University of Leicester, Leicester, UK [2] Leicester NIHR Biomedical Research Unit in Cardiovascular Disease, Glenfield Hospital, Leicester, UK.
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