Increased ACh-associated immunoreactivity in autonomic centers in PTZ kindling model of epilepsy

Enes Akyüz, Züleyha Doğanyiğit, Yam Nath Paudel, Emin Kaymak, Seher Yilmaz, Arda Uner, Mohd Farooq Shaikh

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Abstract

Experimental and clinical studies of cardiac pathology associated with epilepsy have demonstrated an impact on the autonomic nervous system (ANS). However, the underlying molecular mechanism has not been fully elucidated. Molecular investigation of the neurotransmitters related receptor and ion channel directing ANS might help in understanding the associated mechanism. In this paper, we investigated the role of acetylcholine (ACh), which demonstrates both sympathetic and parasympathetic roles in targeted expression in terms of the relevant receptor and ion channel. Inwardly rectifying potassium (Kir) channels play a significant role in maintaining the resting membrane potential and controlling cell excitability and are prominently expressed in both the excitable and non-excitable tissues. The immunoreactivity of ACh-activated Kir3.1 channel and muscarinic ACh receptors (M2) in autonomic centers such as the brainstem, vagus nerve (VN) and atria of heart was confirmed by both histological staining and pathological tissue analysis. Significant upregulations of Kir3.1 andM2receptors were observed in pentylenetetrazol (PTZ)-kindled epileptic rats for all related tissues investigated, whereas no pathological difference was observed. These findings provide proof-of-concept that changes in ACh-associated immunoreactivity might be linked to the ANS dysfunctions associated with epilepsy.

Original languageEnglish
Article number113
Number of pages14
JournalBiomedicines
Volume8
Issue number5
DOIs
Publication statusPublished - May 2020

Keywords

  • Acetylcholine
  • Epilepsy
  • Kir channels
  • M2 receptors

Cite this