Table 2.
Effect KB-R7943 on contraction and Ca2+ transient parameters of single cat myocytes at 10 bpm
| Indo-1 ratio (410 nm/490 nm) | ||||||
|---|---|---|---|---|---|---|
| L0 (μm) | TA (%of L0) | t1/2 contraction (ms) | Amplitude | t1/2 transient (ms) | n | |
| Control | 137 ± 6 | 1.02 ± 0.20 | 211 ± 20 | 0.16 ± 0.05 | 340 ± 21 | 6 |
| KB-R7943 (1 μm) | 137 ± 6 | 1.14 ± 0.25 | 212 ± 24 | 0.15 ± 0.04 | 320 ± 13 | 6 |
L0, resting cell length; TA, twitch amplitude; t1/2 contraction, half-relaxation time of contraction; t1/2 transient, half-relaxation of indo-1 fluorescence transient. Values are means ± s.e.m.