Pterostilbene is a stilbenoid isolated from blueberries and Pterocarpus marsupium[1]. Shows anti-oxidant, anti-inflammatory, anti-carcinogenic, anti-diabetic and anti-obesity properties[1][4]. Pterostilbene blocks ROS production[3], also exhibits inhibitory activity against various free radicals such as DPPH, ABTS, hydroxyl, superoxide and hydrogen peroxide[4].
Pterostilbene (0, 5, 25, 50, 100, 200 and 400 µM) shows inhibitory activity against the growth of HeLa cells, with IC50s of 101.2 µM and 65.9 µM at 24 and 48 hrs, respectively. Ipterostilbene (0, 25, 100 and 200 µM) also induces the apoptosis HeLa cells[2].Pterostilbene (0.05, 0.1, 0.15 and 0.2 mM) has high anti-oxidant activity against DPPH, ABTS, hydroxyl, superoxide, hydrogen peroxide in a dose-dependent manner. Pterostilbene decreases lipid peroxides and hydroperoxides, reduces protein carbonyl groups and restores protein sulphydryl groups in response to damage by TBHP and As-Fe2+. Pterostilbene also inhibits single strand breaks in pBR322[4].
Pterostilbene (30 mg/kg daily, p.o. for 21 days) inhibits reactive oxygen species production in the animal model of inflammation[3].
References:
[1]. McCormack D, et al. A review of pterostilbene antioxidant activity and disease modification. Oxid Med Cell Longev. 2013;2013:575482.
[2]. Hong Bin W, et al. Pterostilbene (3',5'-dimethoxy-resveratrol) exerts potent antitumor effects in HeLa human cervical cancer cells via disruption of mitochondrial membrane potential, apoptosis induction and targeting m-TOR/PI3K/Akt signalling pathway. J BUON. 2018 Sep-Oct;23(5):1384-1389.
[3]. Perecko T, et al. The effects of pterostilbene on neutrophil activity in experimental model of arthritis. Biomed Res Int. 2013;2013:106041.
[4]. Acharya JD, et al. Protective effect of Pterostilbene against free radical mediated oxidative damage. BMC Complement Altern Med. 2013 Sep 26;13:238.