Protective effect of α-terpineol against impairment of hippocampal synaptic plasticity and spatial memory following transient cerebral ischemia in rats | ||
| Iranian Journal of Basic Medical Sciences | ||
| مقاله 7، دوره 19، شماره 9، 2016، صفحه 960-969 اصل مقاله (1.19 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22038/ijbms.2016.7596 | ||
| نویسندگان | ||
| Mahsa Moghimi1؛ Siavash Parvardeh* 1؛ Taraneh Moini Zanjani1؛ Shiva Ghafghazi2 | ||
| 1Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran | ||
| 2School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran | ||
| چکیده | ||
| Objective(s): Cerebral ischemia is often associated with cognitive impairment. Oxidative stress has a crucial role in the memory deficit following ischemia/reperfusion injury. α-Terpineol is a monoterpenoid with anti-inflammatory and antioxidant effects. This study was carried out to investigate the effect of α-terpineol against memory impairment following cerebral ischemia in rats. Materials and Methods: Cerebral ischemia was induced by transient bilateral common carotid artery occlusion in male Wistar rats. The rats were allocated to sham, ischemia, and α-terpineol-treated groups. α-Terpineol was given at doses of 50, 100, and 200 mg/kg, IP once daily for 7 days post ischemia. Morris water maze (MWM) test was used to assess spatial memory and in vivo extracellular recording of long-term potentiation (LTP) in the hippocampal dentate gyrus was carried out to evaluate synaptic plasticity. Malondialdehyde (MDA) was measured to assess the extent of lipid peroxidation in the hippocampus. Results: In MWM test, α-terpineol (100 mg/kg, IP) significantly decreased the escape latency during training trials (P<0.01). In addition, α-terpineol increased the number of crossings over the platform location and decreased average proximity to the target in probe trial (P<0.05). In electrophysiological recording, α-terpineol (100 mg/kg) facilitated the induction of LTP in the hippocampus which was persistent over 2 hr. α-Terpineol (100 and 200 mg/kg) also significantly lowered hippocampal MDA levels in rats subjected to cerebral ischemia. Conclusion: These findings indicate that α-terpineol improves cerebral ischemia-related memory impairment in rats through the facilitation of LTP and suppression of lipid peroxidation in the hippocampus. | ||
| کلیدواژهها | ||
| α-Terpineol؛ Cerebral ischemia؛ Long-term potentiation؛ Memory؛ Oxidative stress؛ Rats | ||
| مراجع | ||
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