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Huperzine A ameliorates cognitive dysfunction and neuroinflammation in kainic acid-induced epileptic rats by antioxidant activity and NLRP3/caspase-1 pathway inhibition.
Clinical and Experimental Pharmacology & Physiology 2019 January 9
Temporal lobe epilepsy (TLE) is one of the most prevalent types of epilepsy in human. Huperzine A (Hup-A) has been reported to possess antioxidative and anti-inflammatory properties; however, its role in TLE induced by kainic acid has not been determined. The current study investigated the protective effects of Hup-A (0.1 mg/kg) in kainic acid-induced model of TLE in the rat. In our study, we found that Hup-A significantly prevented the seizure intensity and learning and memory deterioration which was assessed by Morris water maze (MWM) and novel object recognition task (NOR). Additionally, Hup-A inhibited oxidative stress, inflammation, and acetylcholinesterase activity (AChE). In addition, catalase and superoxide dismutase (SOD) activities increased after Hup-A treatment, while malondialdehyde (MDA) and nitrite levels significantly reduced. Regarding inflammation, this drug decreased kainic acid-induced NLRP3 expression in microglial cells and caspase-1 activity in hippocampal tissue, possibly through diminishing oxidative stress. Taken together, our data showed that Hup-A could be a potential protective substance to ameliorate seizure severity and some memory deficits related to epilepsy via attenuating neuroinflammation and protection of neurons. This article is protected by copyright. All rights reserved.
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