Paeonol affects proliferation activity of rat vasular endothelial cells induced by lipopolysaccharide and co-cultured with smooth muscle cells via inhibiting pathway of PI3K/AKT-NF-κB signaling Study on inhibitory mechanism of polypeptide extract from scorpion venom on ovarian cancer Protective effect against myocardial ischemia reperfusion injuries induced by hyperoside preconditioning and its relationship with PI3K/Akt signaling pathway in rats