AJP - Heart AJP: Lung Cellular and Molecular Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Heart Circ Physiol 263: H1095-H1106, 1992;
0363-6135/92 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (23)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Naimark, W. A.
Right arrow Articles by Cheung, D. T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Naimark, W. A.
Right arrow Articles by Cheung, D. T.

AJP - Heart and Circulatory Physiology, Vol 263, Issue 4 1095-H1106, Copyright © 1992 by American Physiological Society

ARTICLES

Correlation of structure and viscoelastic properties in the pericardia of four mammalian species

W. A. Naimark, J. M. Lee, H. Limeback and D. T. Cheung
Centre for Biomaterials, University of Toronto, Ontario, Canada.

Although the pericardium is recognized as having important contributions to ventricular function, the relationship between its functional role and structural composition remains poorly understood. Conflicting evidence from low strain rate experiments has shown that differences exist between the mechanical properties of canine, human, and bovine pericardium but with no structural explanation for these differences. This paper examines the pericardia of calves, dogs, pigs, and sheep using a structural/mechanical approach with techniques novel to the pericardial literature. High strain rate mechanical testing for stress-strain response, stress relaxation, and forced vibration response has shown the pericardium to be much more viscoelastic than previously believed under large deformations, but to be quite elastic in small vibrations. The thinner canine and porcine pericardia were found to be significantly stiffer than the thicker bovine and ovine tissues, but equivalently viscoelastic. Biochemical analysis shows these thinner tissues to have significantly higher levels of type III collagen combined with a higher degree of cross-linking. This is the first structural explanation for differences in mechanical properties between the pericardia of different species.


This article has been cited by other articles:


Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
P. D. Jobsis, H. Ashikaga, H. Wen, E. C. Rothstein, K. A. Horvath, E. R. McVeigh, and R. S. Balaban
The visceral pericardium: macromolecular structure and contribution to passive mechanical properties of the left ventricle
Am J Physiol Heart Circ Physiol, December 1, 2007; 293(6): H3379 - H3387.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
D. R. Hamilton, R. Sas, and J. V. Tyberg
Atrioventricular nonuniformity of pericardial constraint
Am J Physiol Heart Circ Physiol, October 1, 2004; 287(4): H1700 - H1704.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online