(+)-BORNEOL (d-Borneol) is a natural bicyclic monoterpene used for analgesia and anesthesia in traditional Chinese medicine; enhances GABA receptor activity with an EC50 of 248 μM.
细胞实验
Oxidative stress was induced by administering 50 μM Aβ into SH-SY5Y cells. Neuroprotective effect of commercially available borneol was examined by determining cell viability with the MTT assay. Intracellular reactive oxygen species (ROS) generation was measured using a fluorometer with further examination of heme oxygenase-1 (HO-1) and nuclear factor-erythroid 2 p45-related factor 2 (Nrf2) expression. Apoptosis was examined by measuring the ratio of B-cell lymphoma 2 (Bcl-2)/Bcl-2-associated X protein (Bax)[1].
动物实验
To mimic a typical human stroke, which does not undergo reperfusion, used a permanent MCAO in this study. For investigating the role of (+)-borneol in permanent cerebral ischemia, 45 male Sprague-Dawley rats were randomly divided into the sham group, the vehicle-treated group and the (+)-borneol-treated groups (1.0 mg/kg), with 15 rats in each group. The terminal half-life (t1/2) of borneol was 2 h following cerebral ischemia-reperfusion. We subjected the rats to pMCAO and administered drugs by tail intravenous injection 2 hours and 5 hours after pMCAO, respectively. The sham group and the vehicle-treated group were injected with vehicle administration. Neurologic scores were assessed at 48 hours after reperfusion[2].