Biochemical and mechanical behavior of ostrich pericardium as a new biomaterial.

Abstract:

:We have performed a comparative analysis of glutaraldehyde-preserved ostrich pericardium, as a novel biomaterial, with bovine pericardium. The biochemical characteristics (histology, water content, amino acid composition, and collagen and elastin contents), mechanical properties, and in vivo calcification in a subcutaneous rat model were examined. Ostrich pericardium is slightly thinner and shows a higher water content (70+/-2% vs. 62+/-2%) than bovine pericardium. Additionally, ostrich pericardium presents 1.6-fold lower elastin content and a lower percentage of collagen in reference to the total protein content (68+/-2% vs. 76+/-2%). However, ostrich pericardium shows better mechanical properties, with higher tensile stress at rupture (32.4+/-7.5 vs. 11.5+/-4.6) than calf pericardium. In vivo calcification studies in a rat subcutaneous model show that ostrich pericardium is significantly less calcified than bovine pericardium (23.95+/-13.30 vs. 100.10+/-37.36 mg/g tissue) after 60 days of implantation. In conclusion, glutaraldehyde-stabilized ostrich pericardium tissue shows better mechanical properties than calf tissue. However, calcium accumulation in implanted ostrich tissue is still too high to consider it a much better alternative to bovine pericardium, and anticalcification treatments should be considered.

journal_name

Acta Biomater

journal_title

Acta biomaterialia

authors

Maestro MM,Turnay J,Olmo N,Fernández P,Suárez D,García Páez JM,Urillo S,Lizarbe MA,Jorge-Herrero E

doi

10.1016/j.actbio.2005.11.004

subject

Has Abstract

pub_date

2006-03-01 00:00:00

pages

213-9

issue

2

eissn

1742-7061

issn

1878-7568

pii

S1742-7061(05)00160-1

journal_volume

2

pub_type

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