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Anticonvulsant And Antiepileptogenic Effects Of Metformin | 94486
ISSN: 2329-6895

Journal of Neurological Disorders
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Anticonvulsant and antiepileptogenic effects of metformin

Joint Event on 4th International Conference on Epilepsy & Treatment & 4th World Congress on Parkinsons & Huntington Disease

Farnaz Nikbakht

Iran University of Medical Sciences, Iran

ScientificTracks Abstracts: J Neurol Disord

DOI: 10.4172/2329-6895-C5-037

Background: Current medications for epilepsy are just anticonvulsive agents and cannot protect against epileptogenic processes. On the other hand, theses anticonvulsive drugs are ineffective for one-third of epilepsy patients. Regarding these limitations, there is an urgent and growing need for a new drug to process both properties. Metformin, a common antidiabetic drug, has been shown to act as an anticonvulsive drug in some experimental models. However, the antiepileptic properties of metformin are not yet clear. Materials & Methods: Sixty male Wistar rats are divided randomly into four groups: control, kainate (KA group), metformin+KA group and metformin group. Temporal lobe epilepsy was induced by intracerebroventricular (ICV) microinjection of 0.5 ?g KA. Metformin was orally administered, starting two weeks before epilepsy induction. Following epilepsy induction, animals were monitored for behavioral seizure severity. Epileptogenesis was assessed by evaluating four factors: Hippocampal neuronal loss and neurodegeneration using Nissl and Fluoro Jade B(5 days after surgery); Neurogenesis using BrdU (5 days after surgery); Mossy Fiber sprouting, using Timm staining (30 days after surgery) and; EEG (30 days after surgery). Results: Metformin as an anticonvulsant drug: the latency to seizure and the seizure severity were both reduced significantly, following metformin treatment (P<0.001). Metformin as antiepileptic drug: According to the Nissl and Fluoro-Jade B staining, the best protected areas in the hippocampus after metformin administration were CA3 and hilus (P<0.00). Behavioral EEG monitoring revealed that metformin-treated rats displayed spontaneous seizures at lower frequencies compared with epilepsy group. Metformin alone increased the neurogenesis which was even greater than Ka-induced neurogenesis. However, metformin-treated rats after epilepsy showed the immigration of new neurons to the hilar and CA3 areas. Metformin also reduced significantly mossy fiber sprouting. Conclusion: Altogether we conclude that metformin acts not only as an anticonvulsant but an antiepileptogenic drug.

Farnaz Nikbakht, before obtaining her PhD degree in Human Physiology from Shiraz University in 2007, she received an award from the Iran Ministry of Health and Education; she spent six months at Flinders University, Adelaide, Australia for completing her research on degenerative diseases. Now, as the Associate Professor of Department of Physiology, Iran University of Medical Sciences, she has managed several research programs and has conducted the thesis of several Masters and PhD students in her Lab. Since 2010 she has directed a research team on Epilepsy and Alzheimer’s diseases fields in her lab. Her research leads to publishing several articles.

E-mail: [email protected]


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