Application of PK-PD modeling in pharmacokinetics of Chinese materia medics Study on PK-PD characteristics of ginsenoside Rg1 and Rb1 in rats with myocardial ischemia following intravenous administration of Shengmai injection Correlation study on in vivo pharmacokinetics and anti-oxidation of Guhong Injection in cerebral ischemia reperfusion injury model of rats