The clinical significance of serum N-terminal pro-brain natriuretic peptide in systemic sclerosis patients.
We evaluated the clinical significance of serum N-terminal pro-brain natriuretic peptide (NT-proBNP) level in systemic sclerosis (SSc). We studied 45 SSc patients (30 with limited and 15 with diffuse cutaneous SSc) of mean age +/- SD 47.1 +/- 12.9 years, mean duration of disease 10.2 +/- 6.0 years, and 45 age- and sex-matched healthy controls. Pulmonary artery pressure was measured by echocardiography. Lung involvement was evaluated by pulmonary function testing and by using high-resolution computed tomography scores. Serum NT-proBNP levels were measured using a sandwich electrochemiluminescent immunoassay. Serum NT-proBNP levels were significantly higher in patients with SSc compared to healthy controls. When the patients were divided into clinical subsets, serum NT-proBNP was higher in diffuse SSc than in limited SSc. Serum NT-proBNP levels were found to be positively correlated with age, skin thickness score, and systolic pulmonary artery pressure and negatively correlated with percentage of carbon monoxide diffusion capacity (DLco). Multivariate analysis showed that serum NT-proBNP levels were positively correlated with age (p = 0.010), skin thickness score (p = 0.000), and blood pressure (p = 0.021) and negatively correlated with %DLco (p = 0.016). Fifty-seven percent of the variation in log (proBNP) can be explained by the multivariate model (R (2) = 0.57). Serum NT-proBNP levels were higher in SSc patients (particularly the diffuse subset) than in healthy controls and were found to be correlated with skin thickness and %DLco. We conclude that serum NT-proBNP may be a biologic marker of skin fibrosis and pulmonary vascular involvement in SSc.
Choi
Hyo Jin
HJ
Department of Internal Medicine, Gachon University of Medicine and Science, Incheon, South Korea.
Shin
Young Kee
YK
Lee
Hyun Joo
HJ
Kee
Joo Young
JY
Shin
Dong Woo
DW
Lee
Eun Young
EY
Lee
Yun Jong
YJ
Lee
Eun Bong
EB
Song
Yeong Wook
YW
D000328:Adult; D015415:Biomarkers / Q000097:blood; D001794:Blood Pressure / Q000502:physiology; D002248:Carbon Monoxide / Q000378:metabolism; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D011651:Pulmonary Artery / Q000503:physiopathology; D012129:Respiratory Function Tests; D012595:Scleroderma, Systemic / Q000097:blood* / Q000473:pathology / Q000503:physiopathology*; D012867:Skin / Q000473:pathology
D015415:Biomarkers; D010446:Peptide Fragments; C109794:pro-brain natriuretic peptide (1-76); D020097:Natriuretic Peptide, Brain; D002248:Carbon Monoxide