Authors:
Recep Basaran Department of Neurosurgery, University of Health Sciences Sancaktepe Training and Research Hospital, Istanbul, Türkiye

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Mustafa Efendioglu Department of Neurosurgery, University of Health Sciences Haydarpaşa Numune Training and Research, Istanbul, Türkiye

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Metehan Akça Department of Physiology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Türkiye

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Duygu Ceman Department of Neurosurgery, University of Health Sciences Sancaktepe Training and Research Hospital, Istanbul, Türkiye

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Cumaali Demirtaş Department of Physiology, Hamidiye Faculty of Medicine, University of Health Sciences, Istanbul, Türkiye

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Yunus Emre Sürmeneli Department of Physiology, Hamidiye Faculty of Medicine, University of Health Sciences, Istanbul, Türkiye

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Mehmet Yildirim Department of Physiology, Hamidiye Faculty of Medicine, University of Health Sciences, Istanbul, Türkiye

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Abstract

Objective

This study aimed to investigate the role of levetiracetam (LEV) and gabapentin (GBP) on mechanical and thermal pain thresholds, as well as n-acetylcysteine (NAC) as an adjuvant, in the pentylenetetrazol (PTZ)-induced post-traumatic epilepsy (PTE) model after mild-traumatic brain injury (TBI) in male Sprague-Dawley rats.

Methods

Animals were randomly divided into 7 groups (Control, PTE, PTE+LEV, PTE+GBP, PTE+NAC, PTE+LEV+NAC and PTE+GBP+NAC). Rats received 50 mg kg−1 LEV, 100 mg kg−1 GBP, and combinations of these antiepileptics with 100 mg kg−1 NAC for 14 days after TBI.

Results

While the thermal pain threshold decreased significantly in the PTE group (P < 0.05), it increased in the PTE+LEV, PTE+GBP, and PTE+LEV+NAC groups (P < 0.05, P < 0.001 and P < 0.01, respectively). Interestingly, NAC alone did not affect the thermal pain threshold, but the combination of PTE+LEV+NAC increased the thermal pain threshold. Furthermore, PTE+GBP+NAC administration prevented the effect of GBP on the thermal pain threshold.

Conclusions

The presented study is the first to examine the effect of LEV and GBP in PTE. It was found that PTE decreased the thermal pain threshold, but LEV and GBP applied for 14 days prevented the decrease in PTE-related pain threshold and increased the thermal pain threshold. NAC, which was used as an adjuvant to support antiepileptic drugs, did not influence the thermal pain threshold alone; however, it increased the pain threshold more by potentiating the effect of LEV. Both LEV and GBP have an antihyperalgesic effect in the PTE model facilitated by PTZ, and NAC further reinforces the antihyperalgesic effect of LEV.

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Editor-in-Chief

László ROSIVALL (Semmelweis University, Budapest, Hungary)

Managing Editor

Anna BERHIDI (Semmelweis University, Budapest, Hungary)

Co-Editors

  • Gábor SZÉNÁSI (Semmelweis University, Budapest, Hungary)
  • Ákos KOLLER (Semmelweis University, Budapest, Hungary)
  • Zsolt RADÁK (University of Physical Education, Budapest, Hungary)
  • László LÉNÁRD (University of Pécs, Hungary)
  • Zoltán UNGVÁRI (Semmelweis University, Budapest, Hungary)

Assistant Editors

  • Gabriella DÖRNYEI (Semmelweis University, Budapest, Hungary)
  • Zsuzsanna MIKLÓS (Semmelweis University, Budapest, Hungary)
  • György NÁDASY (Semmelweis University, Budapest, Hungary)

Hungarian Editorial Board

  • György BENEDEK (University of Szeged, Hungary)
  • Zoltán BENYÓ (Semmelweis University, Budapest, Hungary)
  • Mihály BOROS (University of Szeged, Hungary)
  • László CSERNOCH (University of Debrecen, Hungary)
  • Magdolna DANK (Semmelweis University, Budapest, Hungary)
  • László DÉTÁRI (Eötvös Loránd University, Budapest, Hungary)
  • Zoltán GIRICZ (Semmelweis University, Budapest, Hungary and Pharmahungary Group, Szeged, Hungary)
  • Zoltán HANTOS (Semmelweis University, Budapest and University of Szeged, Hungary)
  • Zoltán HEROLD (Semmelweis University, Budapest, Hungary) 
  • László HUNYADI (Semmelweis University, Budapest, Hungary)
  • Gábor JANCSÓ (University of Pécs, Hungary)
  • Zoltán KARÁDI (University of Pecs, Hungary)
  • Miklós PALKOVITS (Semmelweis University, Budapest, Hungary)
  • Gyula PAPP (University of Szeged, Hungary)
  • Gábor PAVLIK (University of Physical Education, Budapest, Hungary)
  • András SPÄT (Semmelweis University, Budapest, Hungary)
  • Gyula SZABÓ (University of Szeged, Hungary)
  • Zoltán SZELÉNYI (University of Pécs, Hungary)
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  • József TOLDI (MTA-SZTE Neuroscience Research Group and University of Szeged, Hungary)
  • Árpád TÓSAKI (University of Debrecen, Hungary)

International Editorial Board

  • Dragan DJURIC (University of Belgrade, Serbia)
  • Christopher H.  FRY (University of Bristol, UK)
  • Stephen E. GREENWALD (Blizard Institute, Barts and Queen Mary University of London, UK)
  • Tibor HORTOBÁGYI (University of Groningen, Netherlands)
  • George KUNOS (National Institutes of Health, Bethesda, USA)
  • Massoud MAHMOUDIAN (Iran University of Medical Sciences, Tehran, Iran)
  • Tadaaki MANO (Gifu University of Medical Science, Japan)
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  • Hitoo NISHINO (Nagoya City University, Japan)
  • Ole H. PETERSEN (Cardiff University, UK)
  • Ulrich POHL (German Centre for Cardiovascular Research and Ludwig-Maximilians-University, Planegg, Germany)
  • Andrej A. ROMANOVSKY (University of Arizona, USA)
  • Anwar Ali SIDDIQUI (Aga Khan University, Karachi, Pakistan)
  • Csaba SZABÓ (University of Fribourg, Switzerland)
  • Eric VICAUT (Université de Paris, UMRS 942 INSERM, France)

 

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Physiology International
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