title: Relation between plasma brain natriuretic peptide, serum indexes of collagen type I turnover, and left ventricular remodeling after reperfused acute myocardial infarction.
abstract: The aim of the study is to investigate the relation between plasma brain natriuretic peptide (BNP), collagen type I turnover, and left ventricular (LV) remodeling after primary angioplasty. Echo-Doppler, BNP, carboxy-terminal telopeptide of procollagen type I (ICTP), C-terminal propeptide of procollagen type I (PICP), and their ratio PICP/ICTP (as an index of coupling between the synthesis and degradation of collagen type I) were evaluated at days 1 and 3 and months 1 and 6 after primary angioplasty in 56 consecutive patients with a first large acute myocardial infarction (AMI). During the 6 months after AMI, a direct relation was shown between BNP and ICTP (day 1, r = 0.54, p = 0.000; day 3, r = 0.64, p = 0.000; month 1, r = 0.64, p = 0.000; month 6, r = 0.41, p = 0.005) and BNP and PICP/ICTP (day 1, r = -0.54, p = 0.003; day 3, r = -0.58, p = 0.000; month 1, r = -0.50, p = 0.000; month 6, r = -0.30, p = 0.043), but not between BNP and PICP. Using analysis of covariance, relations between BNP and ICTP and PICP/ICTP were independent from infarct size. Patients with LV remodeling had significantly higher plasma ICTP and BNP levels and lower PICP/ICTP than patients without LV remodeling. Day-1 ICTP independently predicted 6-month remodeling (exp beta = 2.14, 95% confidence interval 1,120 to 3,550, p = 0.01). In conclusion, a relation exists between plasma BNP collagen type I turnover and LV remodeling after reperfused AMI.
authors.affiliation: Division of Cardiology, Department of Clinical Physiopathology, Careggi Hospital, Florence, Italy. carddept@tin.it
authors.forename: Giampaolo
authors.initials: G
authors.lastname: Cerisano
authors.forename: Paolo Domenico
authors.initials: PD
authors.lastname: Pucci
authors.forename: Antonio
authors.initials: A
authors.lastname: Sulla
authors.forename: Mariasilvia
authors.initials: M
authors.lastname: Tommasi
authors.forename: Silvia
authors.initials: S
authors.lastname: Raspanti
authors.forename: Giovanni Maria
authors.initials: GM
authors.lastname: Santoro
authors.forename: David
authors.initials: D
authors.lastname: Antoniucci
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015906:Angioplasty, Balloon, Coronary; D024042:Collagen Type I; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000097:blood* / Q000000981:diagnostic imaging / Q000628:therapy*; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D010455:Peptides; D011347:Procollagen / Q000097:blood*; D011446:Prospective Studies; D013997:Time Factors; D014463:Ultrasonography; D020257:Ventricular Remodeling / Q000502:physiology*
chemical_list: D024042:Collagen Type I; D010446:Peptide Fragments; D010455:Peptides; D011347:Procollagen; C052929:collagen type I trimeric cross-linked peptide; C042813:procollagen type I carboxy terminal peptide; D020097:Natriuretic Peptide, Brain