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. 2017 Jun 22;12(6):e0179024. doi: 10.1371/journal.pone.0179024

Table 2. Study parameters for the present study.

Parameters are reported as mean values ± standard error. Number of successful experiments that were performed is indicated (§n = 9, lln = 8, n = 7, #n = 6). AUC 7 min and Ktrans represent DCE-MRI parameters of the plaque microvasculature. The percentage of RAM11 is a measure of the plaque macrophage content. Used abbreviations: heart rate (HR); blood pressure (BP); Elastica von Gieson (EvG); area-under-the-curve (AUC); *p<0.05.

Category Parameter Non-treated Ivabradine-treated P-value
Cardiovascular Conscious HR [bpm] 186±7.0§ 157±9.3 0.03*
Anesthesia HR [bpm] 164±5.9§ 140±6.4 0.03*
Systolic BP [mmHg] 63±3.4§ 71±7.9# 0.27
Diastolic BP [mmHg] 45±3.4§ 53±6.8# 0.33
Plaque burden MR plaque size [mm2] 11.0±0.9ll 10.8±1.1 0.54
EvG intima size [mm2] 6.80±1.03ll 6.61±1.19 0.91
Biomechanics Absolute distension [mm] 0.066±0.017§ 0.064±0.018 0.84
Relative distension [%] 1.9±0.4§ 1.9±0.3 0.84
Plaque vulnerability AUC 7min [a.u.] 791±60ll 604±44 0.03*
Ktrans [min-1] 0.25±0.02ll 0.17±0.02 0.04*
Microvessel density [mm-2] 12.9±1.8ll 9.8±1.8 0.40
Relative lipid core size [%] 1.7±0.4ll 1.5±0.3 0.66
Relative RAM11 [%] 30.6±1.5ll 17.2±2.9 <0.01