Advertisement

Heart and Vessels

, Volume 19, Issue 2, pp 89–93 | Cite as

The effect of ethylenediaminetetraacetic acid on calcific degeneration in bovine pericardium

  • Nehir SucuEmail author
  • Lulufer Tamer
  • H. Ali Dondas
  • Ayse Polat
  • Barlas Aytacoglu
  • M.Y. Burak Cımen
  • Ali Gul
  • Murat Dikmengil
  • Ugur Atik
ORIGINAL ARTICLE

Abstract

Calcification is the most frequent cause of the clinical failure of bovine pericardium bioprosthetic valves, preventing their widespread application for surgical treatment. The aim of this study was to minimize calcific degeneration in bovine pericardium by using a chelating agent, ethylenediaminetetraacetic acid (EDTA). Freshly excised bovine pericardium was dissected free from adhering fat tissue and cut into 1-cm2 pieces that were rinsed in phosphate-buffered saline solution (PBS) and transferred into 4°C PBS containing 1% glutaraldehyde (GA) for initial fixation, then allocated into two groups. Group I received the same treatment in a fresh solution for 5 more days. Group II underwent an additional fixation step in PBS solution (pH 7.4, 37°C) containing 11% EDTA for a period of 48 h (30 ml/g tissue) and was then transferred into freshly prepared PBS + 1% GA solution at 37°C for another 3 days. To investigate the calcification rate, pericardial patches were inserted into the dorsal pouches of 25 male Wistar rats for 21 days. Calcium levels were measured with an atomic absorption spectrophotometer and examined histo-pathologically. The calcium content of EDTA-treated pericardium (Group II), 21 ± 3.8 µg/mg, was significantly lower than that of Group I, 43.3 ± 9.2 µg/mg. Assessment of the degree of calcification in the histological sections generally agreed well with the results of the chemical analyses. Calcium deposition in Group I samples were found to be solid mineral depositions, whereas in the Group II pericardial samples, only smaller traces of calcium were found. Calcific degeneration in bovine pericardium can be reduced by using chelates such as EDTA.

Key words

Calcification Valves Bovine pericardium 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Tokyo 2004

Authors and Affiliations

  • Nehir Sucu
    • 1
    Email author
  • Lulufer Tamer
    • 2
  • H. Ali Dondas
    • 3
  • Ayse Polat
    • 4
  • Barlas Aytacoglu
    • 1
  • M.Y. Burak Cımen
    • 2
  • Ali Gul
    • 1
  • Murat Dikmengil
    • 1
  • Ugur Atik
    • 2
  1. 1.Department of Cardiovascular SurgeryMersin University School of MedicineMersinTurkey
  2. 2.Department of BiochemistryMersin University School of Medicine and School of PharmacyMersinTurkey
  3. 3.Department of ChemistryMersin University School of PharmacyMersinTurkey
  4. 4.Department of PathologyMersin University School of MedicineMersinTurkey

Personalised recommendations