ADO and myocardial infarction: Previous studies indicated that recovery of myocardial function after MI is relevant to recovery of ATP [29], conversion of AMP to ADO has anti-inflammatory effect [30], and ADO has function of regulating inflammatory by binding to adenosine receptors [31], thus, it is speculated that the effect of EA at PC6 may be related to the regulating effect of EA at PC6 in ATP, AMP, and ADO.