https://www.selleckchem.com/products/gdc-0077.html 5 μg/ml. 5‑hydroxy‑7,8‑dimethoxyflavanone slightly changed P-gp's conformation and only stimulated ATPase at very high concentration (100 μg/ml). The docking results showed that 5‑hydroxy‑7,8‑dimethoxyflavanone and verapamil exhibited similar binding affinity to P-gp. The MDR reversing effects were prominent in the vincristine group, the reversal folds were 23.01 and 13.03 when combined with 10 μg/ml 5‑hydroxy‑7,8‑dimethoxyflavanone in the P-gp over-expressing cell line (ABCB1/Flp-In™-293) and MDR cancer cell line (KB/VIN), respectively. The present study demonstrated that 5‑hydroxy‑7,8‑dimethoxyflavanone was a novel effective flavonoid in the P-gp efflux inhibition and in vitro cancer MDR reversion. The present study demonstrated that 5‑hydroxy‑7,8‑dimethoxyflavanone was a novel effective flavonoid in the P-gp efflux inhibition and in vitro cancer MDR reversion. Mitochondria are key cellular organelles that are essential for cell fate decisions. Hydroxysafflor yellow A (HSYA) has displayed an impressively essential role in protection of cerebral ischemia/reperfusion (I/R). However, the mitochondrial effect of HSYA on Brain Microvascular Endothelial Cells (BMECs) under I/R remains to be largely unclear. To evaluate the protective effects of HSYA-mediated mitochondrial permeability transition pore (mPTP) on cerebral I/R injury and its mechanism. Cerebral I/R injury was established by the model of Middle cerebral artery occlusion (MCAO) in rats. Furthermore, to further clarify the relevant mechanism of HSYA's effects on mPTP, inhibition of extracellular regulated protein kinases (ERK) with U0126 and transfect with Cyclophilin D (CypD) SiRNA to reversely verified whether the protective effects of HSYA were exerted by regulating the Mitogen-activated protein kinase kinase (MEK)/ERK/CypD pathway. HSYA treatment significantly increased BMECs viability, decreased thes mPTP-related diseases. Prescription-event monitoring st