Table 3. Characterization of cardiac function and morphology.
Exposure | STAGE | Group | Edema area, % | BPM4 | SV, % | VFS, % SV incl. | VFS, % SV excl. | AFS, % | VL % of control | VA % of control | VC % of control | % A/V block |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Transient exposure | 24 h, 2 dph (13 dpe) | Control | 8 ± 5a | 57 ± 6 | 0 | 18 ± 4a | 18 ± 4a | — | — | — | — | 0 |
Low dose | 9 ± 5a | 57 ± 7 | 0 | 16 ± 5a | 16 ± 5a | — | — | — | — | 0 | ||
Pulse dose | 10 ± 7a | 57 ± 5 | 0 | 16 ± 5a | 16 ± 5a | — | — | — | — | 0 | ||
High dose | 7 ± 4a | 56 ± 5 | 20 | 9 ± 5b | 12 ± 5b | — | — | — | — | 0 | ||
48 h, 2 dph (12 dpe) | Control | 10 ± 5a | 57 ± 8 | 0 | 17 ± 4a | 17 ± 4a | — | — | — | — | 0 | |
Low dose | 11 ± 7a | 59 ± 7 | 17 | 13 ± 8a,b | 16 ± 6a,b | — | — | — | — | 0 | ||
Pulse dose | 9 ± 4a | 56 ± 5 | 7 | 14 ± 6a | 16 ± 5a,b | — | — | — | — | 0 | ||
High dose | 17 ± 12b | 54 ± 5 | 23 | 9 ± 7b | 13 ± 6b | — | — | — | — | 0 | ||
Continuous embryonic exposure | 9 dpf | Control | †10 ± 12a | 26 ± 3a | 2 ± 4a | — | — | — | — | — | — | — |
Low dose | †28 ± 18b | 25 ± 5a | 14 ± 5b | — | — | — | — | — | — | — | ||
Pulse dose | †43 ± 32c | 26 ± 4a | 44 ± 21c | — | — | — | — | — | — | — | ||
High dose | †70 ± 20d | 20 ± 6b | 49 ± 15c | — | — | — | — | — | — | — | ||
0 dph (3 dpe) | Control | 7 ± 6a | 41 ± 6a | 5 ± 5a | 17 ± 7a | 18 ± 6a | 25 ± 6a | 100 ± 21a | 100 ± 32a | 100 ± 5a | 0 | |
Low dose | 16 ± 9b | 42 ± 6a | 13 ± 8b | 15 ± 7a,b | 16 ± 6a | 25 ± 7a | 89 ± 20b | 84 ± 33b | 99 ± 4a | 0 | ||
Pulse dose | 31 ± 14c | 41 ± 7a | 30 ± 15c | 12 ± 9b | 15 ± 7a | 24 ± 6a | 64 ± 16c | 49 ± 21c | 93 ± 6b | 0 | ||
High dose | 31 ± 12c | 34 ± 11b | 54 ± 28d | 4 ± 6c | 9 ± 6b* | 16 ± 8b | 51 ± 21d | 35 ± 23d | 85 ± 14c | 0 | ||
3 dph (6 dpe) | Control | — | 59 ± 7a | 2 ± 3a | 17 ± 6a | 17 ± 5a | 21 ± 7a | — | — | — | 0 | |
Low dose | — | 59 ± 6a | 57 ± 25b | 7 ± 7b,d | 12 ± 6b | 17 ± 7b | — | — | — | 0 | ||
Pulse dose | — | 58 ± 8a | 29 ± 17c | 12 ± 8c | 15 ± 6a,c | 17 ± 6b | — | — | — | 0 | ||
High dose | — | 46 ± 10b | 72 ± 20d | 3 ± 6d | 14 ± 4b,c* | 11 ± 7c | — | — | — | 0 | ||
Larval exposure | 2 dph | Control | — | 73 ± 10a | 0 | 16 ± 4a | — | — | — | — | — | 4 ± 8a |
Low dose | — | 77 ± 7a | 0 | 15 ± 5a | — | — | — | — | — | 2 ± 4a | ||
Pulse dose | — | 78 ± 10a | 0 | 16 ± 5a | — | — | — | — | — | 2 ± 4a | ||
High dose | — | 77 ± 11a | 0 | 16 ± 6a | — | — | — | — | — | 2 ± 4a | ||
9 dph | Control | 9 ± 3a | 105 ± 12a | 0 | 17 ± 3a | — | — | — | — | — | 0 ± 0a | |
Low dose | 12 ± 4b | 104 ±19a | 0 | 17 ± 4a | — | — | — | — | — | 2 ± 4a | ||
Pulse dose | 12 ± 4b | 110 ± 13a | 0 | 17 ± 4a | — | — | — | — | — | 8 ± 7b | ||
High dose | 13 ± 4b | 106 ± 15a | 0 | 21 ± 4b | — | — | — | — | — | 17 ± 12c | ||
18 dph | Control | 7 ± 5a | — | — | — | — | — | — | — | — | — | |
Low dose | 15 ± 16a | — | — | — | — | — | — | — | — | — | ||
Pulse dose | 13 ± 11a | — | — | — | — | — | — | — | — | — | ||
High dose | 32 ± 13b | — | — | — | — | — | — | — | — | — |
4BPM, beats per minute; SV, silent ventricle; VFS, ventriclular fractional shortening; AFS, atrial fractional shortening; VL, ventricular length; VA, ventricular area; VC, ventricular circularity; A/V atrioventricular. Dpe = days post exposure stop.
a–dLetters indicate significant differences between groups (p = <0.05) (groups with same letters are not significantly different from each other).
VFS measurements were not performed in animals with severely underdeveloped ventricles.
†Incidence of edema, not area.
*Few animals with beating ventricles.