Resveratrol-loaded copolymer nanoparticles with anti-neurological impairment, antioxidant and anti-inflammatory activities against cerebral ischemia–reperfusion injury

Abstract

During cerebral ischemia/reperfusion (I/R) injury, oxidative stress and inflammation are major contributors to disability. Finding compounds that reduce oxidative stress, inflammation and strengthen the antioxidant defense system properties is one of the vital areas of research. Therefore, the present research aimed to evaluate the effects of resveratrol loaded in copolymer nanoparticles (RES.CP.NPs) on cerebral I/R injury in rats. After preparing and characterization RES.CP.NPs, these platforms were administered to cerebral I/R injured rats at a dose of 20 mg/kg after 2 h occlusion and the neurological disability scores were measured 24 h later. The content of malondialdehyde (MDA), glutathione (GSH), and catalase (CAT) activity as well as the expression levels of TNF-α, IL-10 and NF-κB-p65 in rat brain homogenates were measured. The RES.CP.NPs synthesized in the present study had a spherical structure with a zeta potential of −38 mV and a stable RES release for 72 h. Administration of RES.CP.NPs to I/R rats resulted in significant improvement in neurological disability score, decreased MDA levels, increased GSH content, increased CAT activity, decreased TNF-α expression, increased IL-10 expression, and decreased NF-κB-p65 expression (P < 0.0001). RES.CP.NPs can have neuroprotective effects in cerebral I/R conditions as a result of their strong antioxidant and anti-inflammatory activities.