Objective To compare the effects of the left and right stellate ganglion resection on myocardial injury in rats with acute myocardial infarction(AMI).Methods According to the random number table method,30 healthy male Sprague Dawley rats were divided into the AMI group,left stellate ganglionectomy group,and right stellate ganglionectomy group,with 10 rats in each group.AMI models were prepared by ligation of the left anterior descending branch of the coronary artery in all the three groups.In the AMI group,the stellate ganglion was isolated(randomly left or right)without excision.The rats in the left and right stellate ganglionectomy groups underwent the left and right stellate ganglionectomy,respectively.At 24 hours after modeling,2 mL of subclavian venous blood was extracted from the three groups of rats.The serum levels of cardiac troponin Ⅰ(cTnⅠ),noradrenaline(NE),interleukin(IL)-1β,IL-6,tumor necrosis factor-α(TNF-α),malondialdehyde(MDA),and superoxide dismutase(SOD)were detected by enzyme-linked immunosorbent assay.The left ventricular fractional shortening(LVFS),left ventricular ejection fraction(LVEF)and cardiac output(CO)of rats in the three groups were measured by echocardiography one week after modeling.Results The serum levels of NE,cTnⅠ and MDA in the left and right stellate ganglionectomy groups were significantly lower than those in the AMI group,and SOD level was significantly higher than that in the AMI group(P＜0.05);the serum levels of NE,cTnⅠ and MDA in the right stellate ganglionectomy group were significantly lower than those in the left stellate ganglionectomy group,and SOD level was significantly higher than that in the left stellate ganglionectomy group(P＜0.05).The levels of serum IL-1β,IL-6 and TNF-α in the left and right stellate ganglionectomy groups were significantly lower than those in the AMI group(P＜0.05);the levels of serum IL-1β,IL-6 and TNF-αin the right stellate ganglionectomy group were significantly lower than those in the left stellate ganglionectomy group(P＜0.05).LVEF,LVFS and CO in the left and right stellate ganglionectomy groups were significantly higher than those in the AMI group,and LVEF and LVFS in the right stellate ganglionectomy group were significantly higher than those in the left stellate ganglionectomy group(P＜0.05);there was no significant difference in CO between the left and right stellate ganglionectomy groups(P＞0.05).Conclusion Stellate ganglionectomy has a protective effect on AMI induced by ligation of the left anterior descending branch of the coronary artery,which may be related to reducing inflammatory reaction and oxidative stress damage.The right stellate ganglion resection has more protective effects on cardiac function than the left stellate ganglion resection.
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