Role of 5HT1A receptor on potentiation of field potentials in dentate gyrus of pentylenetetrazol -kindled rats

authors:

avatar Atefeh Kiani Nejad , avatar Gholamhassan Vaezi , avatar Hassan Azhdari-Zarmehri , avatar Mohammad Mohammad-Zadeh , *

Koomesh: Vol.19, issue 3; 641-647
published online: September 01, 2017
article type: Research Article
received: September 01, 2015
accepted: December 01, 2016

how to cite: Kiani Nejad A, Vaezi G, Azhdari-Zarmehri H, Mohammad-Zadeh M. Role of 5HT1A receptor on potentiation of field potentials in dentate gyrus of pentylenetetrazol -kindled rats. koomesh. 2017;19(3):e152910. 

Abstract

Introduction: There are many evidence to indicate the role of serotoninergic system and serotoninergic activation in seizure attacks. Given the role of serotonin 5-HT1A receptors in synaptic activity and seizure models, and, the similarity of the mechanisms involved in causing seizures and long term potentiation (LTP), the purpose of this study was to investigate the role of this receptor in pentylenetetrazol  (PTZ)-induced synaptic strengthening. Materials and Methods: 24 Male Wistar rats (n=20, 220-320 g) were divided into 6 groups Group1 (control) without any interference after surgery stereotoxic placement of stimulation electrode, Local Field Potential (LFP) was recorded for 20min .Then the LTP was induced with tetanic stimulation. Group2: All experimental procedures were similar to the group 1, the difference was that the one-month period before the surgery, the animals kindled with PTZ injection.  Groups 3-5: All experimental procedures were similar to the group 2, the difference was that the serotonin receptor antagonist (WAY-100635 at a concentration 12.5, 25 and 50nM) was injected intraventricularly. Group 6 received WAY-100635 only. Results: The results showed that groups 1 and 2 were different responded from one another after LTP induction of LTP with tetanic pulse (p

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