Table 1.
Parameters for cryopreserved and glycerinated porcine and human myocardium
| Parameters | Porcine (glycerinated) | Porcine (cryopreserved) | Human (cryopreserved) |
|---|---|---|---|
| Po (kN m−2) | 24.74 ± 3.55 (16) | 15.77 ± 3.70∗ (6) | 16.77 ± 2.38† (26) |
| Relaxed stiffness (kN m−2) | 974 ± 158 (16) | 577 ± 59† (6) | 572 ± 92† (26) |
| Activated stiffness (kN m−2) | 1722 ± 256 (16) | 1050 ± 129† (6) | 1178 ± 198∗ (26) |
| Resting ATPase activity (μM s−1) | 48 ± 7 (16) | 64 ± 8 (6) | 41 ± 8 (26) |
| Maximum ATPase activity (μM s−1) | 183 ± 27 (16) | 207 ± 41 (6) | 132 ± 18∗ (26) |
| Ca2+-sensitive ATPase activity (μM s−1) | 135 ± 23 (16) | 143 ± 40 (6) | 91 ± 12† (26) |
| K (M−1) | 5.87 ± 1.29 × 105 (12) | 6.80 ± 1.81 × 105 (9) | 9.86 ± 2.43 × 105 (17) |
| q | 1.02 (12) | 1.08 (9) | 1.18 (17) |
Numbers in parentheses are n values. Calcium sensitivity parameters were obtained from fits to pooled data from all preparations.
∗
Significantly different from glycerinated porcine at p = 0.10.
†
Significantly different from glycerinated porcine at p = 0.05.