Soluble Vascular Cell Adhesion Molecule-1 (VCAM-1) as a Biomarker in the Mouse Model of Experimental Autoimmune Myocarditis (EAM)

PLoS One. 2016 Aug 8;11(8):e0158299. doi: 10.1371/journal.pone.0158299. eCollection 2016.

Abstract

Vascular cell adhesion molecule-1 (VCAM-1) is strongly upregulated in hearts of mice with coxsackie virus-induced as well as in patients with viral infection-triggered dilated cardiomyopathy. Nevertheless, the role of its soluble form as a biomarker in inflammatory heart diseases remains unclear. Therefore, we investigated whether plasma levels of soluble VCAM-1 (sVCAM-1) directly correlated with disease activity and progression of cardiac dysfunction in the mouse model of experimental autoimmune myocarditis (EAM). EAM was induced by immunization of BALB/c mice with heart-specific myosin-alpha heavy chain peptide together with complete Freund`s adjuvant. ELISA revealed strong expression of cardiac VCAM-1 (cVCAM-1) throughout the course of EAM in immunized mice compared to control animals. Furthermore, sVCAM-1 was elevated in the plasma of immunized compared to control mice at acute and chronic stages of the disease. sVCAM-1 did not correlate with the degree of acute cardiac inflammation analyzed by histology or cardiac cytokine expression investigated by ELISA. Nevertheless, heart to body weight ratio correlated significantly with sVCAM-1 at chronic stages of EAM. Cardiac systolic dysfunction studied with positron emission tomography indicated a weak relationship with sVCAM-1 at the chronic stage of the disease. Our data provide evidence that plasma levels of sVCAM-1 are elevated throughout all stages of the disease but showed no strong correlation with the severity of EAM.

MeSH terms

  • Animals
  • Autoimmune Diseases / blood
  • Autoimmune Diseases / diagnosis*
  • Autoimmune Diseases / immunology
  • Biomarkers / blood*
  • Cytokines / metabolism
  • Disease Models, Animal*
  • Immunization
  • Inflammation / blood
  • Inflammation / diagnosis*
  • Inflammation / immunology
  • Male
  • Mice
  • Mice, Inbred BALB C
  • Myocarditis / blood
  • Myocarditis / diagnosis*
  • Myocarditis / immunology
  • Vascular Cell Adhesion Molecule-1 / blood*

Substances

  • Biomarkers
  • Cytokines
  • Vascular Cell Adhesion Molecule-1

Grants and funding

This work was funded by the "Förderung für Forschung und Lehre" - program of the LMU-Munich. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.