Table 1. Echocardiographic measurements.
Male WT | Female WT | Male cs-ERα−/− | Female cs-ERα−/− | Stats | |
Structural | |||||
LVPWId (mm/g) | 0.03±0.003 | 0.04±0.002 | 0.03±0.006 | 0.039±0.003 | a |
LVPWIs (mm/g) | 0.05±0.002 | 0.06±0.003 | 0.05±0.008 | 0.061±0.009 | a |
LVIDId (mm/g) | 0.12±0.002 | 0.15±0.011 | 0.11±0.008 | 0.132±0.002 | a, b |
LVIDIs (mm/g) | 0.06±0.005 | 0.08±0.010 | 0.006±0.005 | 0.067±0.003 | a, b |
IVSd | 0.870±0.06 | 0.890±0.04 | 0.890±0.1401 | 0.940±0.064 | a |
IVSs | 1.420±0.15 | 1.430±0.092 | 1.450±0.134 | 1.510±0.256 | a |
LVM | 112.63±20.23 | 107.65±17.18 | 95.74±12.60 | 92.04±6.16 | |
LVMI (mg/g) | 3.790±0.45 | 4.660±0.69 | 3.250±0.45 | 3.980±0.09 | a, b |
Functional | |||||
FS (%) | 48.68±3.16 | 47.01±3.47 | 45.80±2.91 | 48.88±2.44 | |
E’ (mm/s) | 42.41±7.77 | 36.78±4.78 | 33.16±5.45 | 41.08±9.90 | |
A’ (mm/s) | 33.16±6.22 | N/A | N/A | N/A | |
S’ | 34.63±1.44 | 28.17±3.10 | 26.84±2.98 | 28.32±4.10 | b, c |
IVCT (ms) | 5.80±2.05 | 6.96±2.72 | 7.78±1.43 | 7.49±1.74 | |
ET | 38.05±3.66 | 42.11±2.26 | 38.33±4.18 | 41.86±3.52 | |
IVRT (ms) | 11.52±3.65 | 10.20±1.61 | 12.67±2.20 | 11.57±1.78 | |
Tei Index | 0.45±0.09 | 0.41±0.10 | 0.53±0.04 | 0.46±0.08 |
All dimensional measurements were indexed to body weight. FS, fractional shortening; E, peak velocity of early diastolic trans-mitral flow; A, peak velocity of late (atria) diastolic trans-mitral flow; S’, peak velocity of systolic mitral annular motion; E’, peak velocity of early diastolic mitral annular motion; A’, peak velocity of late (atrial) diastolic mitral annular motion; IVCT, iso-volumic contraction time; ET, LV ejection time; IVRT, iso-volumic relaxation time; Tei Index, LV performance index calculated as (IVCT+IVRT)/ET. Values given as mean ± SD (N = 4/group). N/A, not available; adenotes sex significance between male and female mice; bdenotes genotypic significance between wild type and cs-ERα−/− mice; cInteraction term of ANOVA analysis was significant; P<0.05 was considered significant.