TY - JOUR
T1 - Biomarkers associated with pulse pressure in African-Americans and non-hispanic whites
AU - Coutinho, Thais
AU - Turner, Stephen T.
AU - Mosley, Thomas H.
AU - Kullo, Iftikhar J.
N1 - Funding Information:
Supplementary material is linked to the online version of the paper at http://www.nature.com/ajh acknowledgment: This work was supported by: grants HL89354, HL81331, and M01 RR00585 from the National Institutes of Health.
PY - 2012/2
Y1 - 2012/2
N2 - Background Pulse pressure (an indirect measure of arterial stiffness) is a robust predictor of cardiovascular events, but its pathophysiology remains poorly understood. To gain insight into the pathophysiology of arterial stiffness we conducted an exploratory investigation of the associations of 47 circulating biomarkers in etiologic pathways of arteriosclerosis with brachial artery pulse pressure. Methods Participants included 1,193 African-Americans and 1,145 non-Hispanic whites belonging to hypertensive sibships. Blood pressure (BP) was measured with a random-zero sphygmomanometer. Multivariable linear regression was employed to assess the associations of biomarkers with pulse pressure after adjustment for age, sex, conventional risk factors, mean arterial pressure, heart rate, and use of aspirin, statins, estrogens, and antihypertensives. Statistical significance was set at P≤ 0.001 (Bonferroni correction for multiple testing). Results Log N-terminal probrain natriuretic peptide (NT-proBNP) (African-Americans: Β = 2.11 ± 0.52, non-Hispanic whites: Β = 2.65 ± 0.55), log midregional proatrial natriuretic peptide (African-Americans: Β = 4.83 ± 0.70, non-Hispanic whites: Β = 3.70 ± 0.67), and log osteoprotegerin (African-Americans: Β = 4.64 ± 1.02, non-Hispanic whites: Β = 4.19 ± 0.99) were independently associated with pulse pressure (P 0.001 for all) in both ethnicities. Log C-reactive protein (CRP) (Β = 1.56 ± 0.35), log midregional proadrenomedullin (MR-proADM) (Β = 5.53 ± 1.19) and log matrix metalloproteinase-2 (Β = 3.89 ± 1.06) were associated with greater pulse pressure in African-Americans only (P≤ 0.001 for all), whereas higher fibrinogen was associated with pulse pressure in non-Hispanic whites only (Β = 0.02 ± 0.004. P< 0.001). Conclusions Our results suggest that hemodynamic stress, vascular inflammation and calcification, and matrix remodeling may have a role in the pathogenesis and/or adverse consequences of increased pulse pressure.
AB - Background Pulse pressure (an indirect measure of arterial stiffness) is a robust predictor of cardiovascular events, but its pathophysiology remains poorly understood. To gain insight into the pathophysiology of arterial stiffness we conducted an exploratory investigation of the associations of 47 circulating biomarkers in etiologic pathways of arteriosclerosis with brachial artery pulse pressure. Methods Participants included 1,193 African-Americans and 1,145 non-Hispanic whites belonging to hypertensive sibships. Blood pressure (BP) was measured with a random-zero sphygmomanometer. Multivariable linear regression was employed to assess the associations of biomarkers with pulse pressure after adjustment for age, sex, conventional risk factors, mean arterial pressure, heart rate, and use of aspirin, statins, estrogens, and antihypertensives. Statistical significance was set at P≤ 0.001 (Bonferroni correction for multiple testing). Results Log N-terminal probrain natriuretic peptide (NT-proBNP) (African-Americans: Β = 2.11 ± 0.52, non-Hispanic whites: Β = 2.65 ± 0.55), log midregional proatrial natriuretic peptide (African-Americans: Β = 4.83 ± 0.70, non-Hispanic whites: Β = 3.70 ± 0.67), and log osteoprotegerin (African-Americans: Β = 4.64 ± 1.02, non-Hispanic whites: Β = 4.19 ± 0.99) were independently associated with pulse pressure (P 0.001 for all) in both ethnicities. Log C-reactive protein (CRP) (Β = 1.56 ± 0.35), log midregional proadrenomedullin (MR-proADM) (Β = 5.53 ± 1.19) and log matrix metalloproteinase-2 (Β = 3.89 ± 1.06) were associated with greater pulse pressure in African-Americans only (P≤ 0.001 for all), whereas higher fibrinogen was associated with pulse pressure in non-Hispanic whites only (Β = 0.02 ± 0.004. P< 0.001). Conclusions Our results suggest that hemodynamic stress, vascular inflammation and calcification, and matrix remodeling may have a role in the pathogenesis and/or adverse consequences of increased pulse pressure.
KW - adrenomedullin
KW - arterial stiffness
KW - atrial natriuretic peptide
KW - biomarkers
KW - blood pressure
KW - brain natriuretic peptide
KW - fibrinogen
KW - hypertension
KW - matrix metalloproteinase-2
KW - osteoprotegerin
KW - pulse pressure
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U2 - 10.1038/ajh.2011.193
DO - 10.1038/ajh.2011.193
M3 - Article
C2 - 22012208
AN - SCOPUS:84856050210
SN - 0895-7061
VL - 25
SP - 145
EP - 151
JO - American journal of hypertension
JF - American journal of hypertension
IS - 2
ER -