Effect of esmolol on myocardial apoptosis and cardiac function in rats with sepsis / 重庆医学

ABSTRACT

Objective To investigate the effect of esmolol on myocardial apoptosis and cardiac function in rats with sepsis .Meth‐ods Ninety six SD rats were randomly divided into sham group (n= 32 ,for sham operation) ,sepsis group (n= 32 ,sepsis model) and treatment group (n= 32 ,intravenous infusion with esmolol after sepsis modeling) .At 3 h ,6 h ,12 h ,24 h after operation ,sam‐ples were conserved to measure serum cardiac troponin I (cTnI) ,caspase‐3 ,cardiomyocytes apoptosis index ,and myocardial patho‐morphology was observed by optical microscope .At 24 h after operation ,echocardiography was performed .Results The serum cT‐nI ,caspase‐3 ,cardiomyocytes apoptosis index were increased significantly in sepsis group and treatment group compared with sham group (all P< 0 .05) .After using esmolol ,cTnI and cardiomyocytes apoptosis index were relatively decreased in treatment group compared with sepsis group at the four time‐points(all P < 0 .05) .Caspase‐3 of treatment group decreased at 12 h after operation compared with sepsis group (P< 0 .05) .Treatment group had a higher LVEF than sepsis group at 24 h(P< 0 .05) .Conclusion Es‐molol could inhibit myocardial apoptosis and mitigate the damage of cardiac function in rats with sepsis .The decrease in caspase‐3 may be the mechanism of anti‐apoptosis .