Influence of Astragalus heart keeping decoction on plasma ET and CGRP in the rats of experimental acute myocardial infarction

Key words: 
• astragalus heart-keeping decoction /
• acute myocardial infarction /
• experimental study /
• ET

Abstract: OBJECTIVE To investigate the influence of Astragalus heart keeping decoction on the level of plasma endothelin(El') and calcitonin gene related peptide (CGRP) in rats during the coronary artery occlusion in vivo. METHODS 44 rats were devided randomly into the sham ligation group, the control group, the Astragalus heart -keeping decoction (AHKD) group, the Composite Danshen Droplet Pills (CDDP) group. Various groups of the rats were fed with water, AHKD, CDDP for four weeks, respectively. And then rats were subjected to left anterior descending artery occlusion for 3 hour. for the determination of plasma El' and CGRP. RESULTS the level of plasma ET was lower on average in the group of AHKD than in the control group(P<0.01),and in comparison with the control group there was no significant difference in plasma ET in the group of CDDP (P<0.05). The level of plasma CGRP in the AHKD and CDDP groups was higher than that of plasma CGRP in the control group (P<0.01). CONCLUSION AHKD and CDDP have the function to regulate the level of plasma ET and CGRP in rats during the coronary artery occlusion, to improve myocardial ischemia,and that the efficacy of AHKD is superior to that of CDDP.