AU - Khombi Shooshtari, Maryam AU - Farbood, Yaghoob AU - Mansouri, Seyed Mohammad Taghi AU - Badavi, Mohammad AU - Khorsandi, Laya Sadat AU - Ghasemi Dehcheshmeh, Mohammad AU - Sarkaki, Ali Reza TI - Neuroprotective Effects of Chrysin Mediated by Estrogenic Receptors Following Cerebral Ischemia and Reperfusion in Male Rats PT - JOURNAL ARTICLE TA - BCN JN - BCN VO - 12 VI - 1 IP - 1 4099 - http://bcn.iums.ac.ir/article-1-1694-en.html 4100 - http://bcn.iums.ac.ir/article-1-1694-en.pdf SO - BCN 1 ABĀ  - Introduction: Ischemic stroke is one of the leading causes of morbidity and mortality worldwide. Neuroprotective strategies were reported to attenuate cognitive deficits after ischemic incidents. Here we studied the neuroprotective potential of chrysin in a rat model of cerebral Ischemia/Reperfusion (I/R) in the presence or absence of Estrogen Receptors (ERs). Methods: Adult male Wistar rats were pretreated with chrysin (CH) (CH; 30 mg/kg; gavage; for 21 consecutive days) alone or with selective ERs antagonists (ERα antagonist MPP; ERβ antagonist PHTPP; IP) or nonselective ERs antagonist (ICI182780; IP). Then, the bilateral common carotid arteries were occluded for 20 min, which was followed by 72 h reperfusion. Subsequently, cognitive performance was evaluated by Morris Water Maze (MWM) and shuttle box tasks, and afterward, their hippocampi were removed for ELISA assays and H&E staining. Oxidative indicators Malondialdehyde (MDA) and Glutathione Peroxidase (GPx), as well as inflammation mediators interleukin (IL)-1β and tumor necrosis factor-alpha (TNFα), were measured using commercial kits. Results: Results of the current study showed that the anti-oxidative and anti-inflammatory properties of CH are possible mechanisms that could improve cognitive deficits and prevent neuronal cell death following I/R (P<0.001). These effects were reversed by ICI182780 (P>0.05). Furthermore, when chrysin was co-treated with ERβ antagonist, PHTPP showed a weak neuroprotective effect in I/R rats. However, these parameters were not significantly different when chrysin was combined with ERα antagonist MPP. Conclusion: Our data confirm that chrysin could potentially serve as a neuroprotective agent against devastating effects of cerebral I/R injury, which may be mediated via its interaction with ERs, especially ERβ. CP - IRAN IN - Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran LG - eng PB - BCN PG - 149 PT - Original YR - 2021