Lack of activation of molecular forms of the BNP system in human grade 1 hypertension and relationship to cardiac hypertrophy (original) (raw)

2006, American Journal of Physiology-Heart and Circulatory Physiology

We evaluated relationships among two circulating molecular forms of brain natriuretic peptide (BNP32 and NT-proBNP), severity of hypertension (HTN), and cardiac hypertrophy in subjects with mild, moderate, and severe HTN. We prospectively studied 78 patients (43 males; mean age 51.4 ± 11 yr) with essential HTN and 28 age- and sex-matched controls. BNP32 and NT-proBNP were measured by radioimmunoassay. In grade 1 HTN, BNP32 was not elevated and NT-proBNP was reduced ( P = 0.030) compared with controls. However, log-transformed values of BNP32 and NT-proBNP were both increased with severity of HTN from grade 1 to 3 ( P <0.0001 and P = 0.003, respectively). By multivariate analysis, log BNP32 was independently predicted by age (β = 0.210, P = 0.026) and HTN grade (β = 0.274, P = 0.004), whereas log NT-proBNP was independently predicted by sex (β = 0.235, P = 0.012) and HTN grade (β = 0.218, P = 0.0023). Two forms of BNP were measured in normal subjects and patients with essential HT...

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