Circulating markers of collagen types I, III, and IV in patients with dilated cardiomyopathy: relationships with myocardial collagen expression. (1st October 2018)

• Record Type: Journal Article
• Authors: Nagao, Kazuya; Inada, Tsukasa; Tamura, Akinori; Kajitani, Kenji; Shimamura, Kiyotaka; Yukawa, Hiroshi; Aida, Kenji; Sowa, Naoya; Nishiga, Masataka; Horie, Takahiro; Makita, Toshinori; Ono, Koh; Tanaka, Masaru
• Is Part Of: ESC heart failure. Volume 5:Number 6(2018)
• Page Start: 1044
• Page End: 1051
• Publication Date: 2018-10-01
• Subjects: 7S domain of collagen IV (P4NP 7S) -- Fibrosis -- C‐terminal telopeptide of collagen I (CITP) -- N‐terminal propeptide of procollagen III (PIIINP) -- Organ injury -- Heart failure; Heart failure -- Periodicals; 616.129005
• DOI: 10.1002/ehf2.12360
• Languages: English
• ISSNs: 2055-5822

Abstract

Abstract: Aims: Collagen‐derived peptides such as collagen I C‐terminal telopeptide (CITP) and procollagen III N‐terminal propeptide (PIIINP) have been conventionally used as markers of cardiac fibrosis. Collagen IV 7S domain (P4NP 7S) has been recently reported to be correlated with haemodynamics in patients with acute heart failure. We investigated whether these markers reflect cardiac remodelling and myocardial collagen expression. Methods and results: In 80 patients with dilated cardiomyopathy, relationships of CITP, PIIINP, and P4NP 7S to clinical and echocardiographic variables were analysed. CITP and PIIINP were inversely correlated with estimated glomerular filtration rate ( r = −0.41, P < 0.001 and r = −0.32, P = 0.004, respectively); P4NP 7S was positively correlated with B‐type natriuretic peptide ( r = 0.32, P = 0.003) and γ‐glutamyltransferase ( r = 0.38, P < 0.001). These correlations were significant even after adjustment by potential confounders, whereas all three collagen markers were not independently correlated with ejection fraction nor with left ventricular (LV) diastolic diameter. In 33 patients undergoing endomyocardial biopsy, myocardial collagen I and III mRNA expressions were correlated with LV end‐diastolic volume index ( r = 0.42, P = 0.02 and r = 0.54, P = 0.002, respectively), whereas myocardial collagen IV mRNA expression was not correlated with LV end‐diastolic volume index nor with ejection fraction. Each collagen‐derived peptide was not significantly correlated with the myocardial expression of their corresponding collagen mRNA. Conclusions: Our study shows that CITP, PIIINP, and P4NP 7S do not reflect myocardial collagen mRNA expression but presumably reflect extra‐cardiac organ injury in heart failure.