Author/Authors :
CHOOPANKAREH, Shadi mashhad university of medical sciences - School of Medicine, Neurocognitive Research Center - Department of Physiology, ايران , VAFAEE, Farzaneh mashhad university of medical sciences - School of Medicine, Neurocognitive Research Center - Department of Physiology, ايران , SHAFEI, Mohammad Naser mashhad university of medical sciences - School of Medicine, Neurogenic Inflammation Research Center - Department of Physiology, ايران , SADEGHNIA, Hamid Reza mashhad university of medical sciences - School of Medicine, Pharmacological Research Center of Medicinal Plants - Department of Pharmacology, ايران , SALARINIA, Reza mashhad university of medical sciences - School of Medicine - Department of Modern Sciences and Technologies, ايران , ZAREPOOR, Leila University of Guelph - College of Biological Science - Department of Human Health and Nutritional Sciences, Canada , HOSSEINI, Mahmoud mashhad university of medical sciences - School of Medicine, Neurocognitive Research Center - Department of Physiology, ايران
Abstract :
Background/aim: The effects of coadministration of melatonin and theanine (Mel/Thea) on pentylenetetrazole (PTZ)-induced seizures and brain tissue oxidative damage were investigated in ovariectomized (OVX) and sham-operated rats. Materials and methods: The rats were divided into the following groups: 1) sham, 2) ovariectomized (OVX), 3) sham-PTZ, 4) OVXPTZ, 5) sham-Mel/Thea-PTZ, and 6) OVX-Mel/Thea-PTZ. Groups 1–4 received saline, while groups 5 and 6 received a combination of Mel/Thea for 6 weeks. All animals except for those in groups 1 and 2 received a single injection of PTZ. Results: The OVX-PTZ group had higher generalized tonic-clonic seizure (GTCS) latency compared to the sham-PTZ group. Administration of Mel/Thea increased minimal clonic seizure and GTCS latencies in both the sham-Mel/Thea-PTZ and OVX-Mel/Thea- PTZ groups compared to the controls. Additionally, PTZ exposure increased malondialdehyde levels and reduced thiol concentrations in brain tissues of both the sham-PTZ and OVX-PTZ groups. Mel/Thea pretreatment resulted in MDA reduction and thiol increase in brain tissues. Conclusion: The results of this study demonstrated the antioxidant and anticonvulsant activities of Mel/Thea despite the presence or absence of ovarian hormones.
Keywords :
Melatonin , theanine , pentylenetetrazole , seizures , oxidative stress , brain , rat
