The effect of temperature and glutaraldehyde fixation on the mechanical properties of bovine pericardial tissues.
A comparison is made of the elastic response of fresh pericardial tissues at 25, 37, and 42 degrees C, and also of fresh and glutaraldehyde-fixed tissues. Strips of bovine pericardial tissues cut perpendicular to the base-apex axis of the heart were used. An Instron machine was used for uniaxial tensile tests, and the strain-rate used was 666.7% X min-1. No significant differences in tissue mechanical properties were observed for temperature values of 25, 37, and 42 degrees C. However tissues fixed in a glutaraldehyde solution were more extensible than fresh tissues. The elastic responses of tissue preserved for 1 day in glutaraldehyde are not very different from those preserved for up to 10 days.
D000818:Animals; D001696:Biomechanical Phenomena; D002417:Cattle; D004548:Elasticity; D005404:Fixatives; D005976:Glutaral; D066298:In Vitro Techniques; D010496:Pericardium / Q000033:anatomy & histology / Q000502:physiology*; D013696:Temperature
D005404:Fixatives; D005976:Glutaral