Abstract:
:The aim of the present study was to determine whether the myocardial protective function of Shenmai injection (SM) during ischemia/reperfusion (I/R) is attributable to its regulation of intracellular calcium (Ca2+) and phospholamban (PLB) levels. Cultured neonatal Sprague Dawley rat cardiomyocytes were used to compare the effects of normoxia, total saponins of Panax ginseng (TSPG), ginsenoside Rg1 (Rg1) and SM treatments in rat myocardial cells following I/R. For each of these treatment groups, the mRNA and protein levels of PLB and the sarco/endoplasmic reticulum Ca2+ ATPase (SERCA) were evaluated, in addition to the cytoplasmic Ca2+ concentration [Ca2+]i and the rate of apoptosis. The results indicated that I/R markedly decreased phosphorylated PLB and SERCA expression and that SM was able to mitigate this effect, while TPSG and Rg1 were not. Furthermore, SM appeared to prevent aberrant apoptosis and restore the depleted [Ca2+]i resulting from I/R. The protective efficacy of SM against heart disease following I/R may, therefore, be due in part to its effect on intracellular Ca2+ homeostasis. SM may exert its protective effects by relieving PLB inhibition, and the pharmacodynamic actions of SM appear to be significantly more effective than those of its bioreactive components, TPSG and Rgl.
journal_name
Exp Ther Medjournal_title
Experimental and therapeutic medicineauthors
Ye LF,Zheng YR,Wang LHdoi
10.3892/etm.2015.2662subject
Has Abstractpub_date
2015-10-01 00:00:00pages
1348-1354issue
4eissn
1792-0981issn
1792-1015pii
ETM-0-0-2662journal_volume
10pub_type
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