Abstract
It is of great importance to explore the development of epileptogenesis, and the adenosine and adenosine kinase (ADK) system seems to play a key role in this process. The aim of this study is to explore the dynamic changes of astrocytes and adenosine signaling during epileptogenesis in rat hippocampus in a post-status epileptogenesis (SE) model. Rat SE models were built and killed for experiments at 1 day (acute phase of epileptogenesis), 5 days (latent phase), 4 weeks (chronic phase), and 8 weeks (late chronic phase of epileptogenesis) after SE induction. Immunofluorescence staining, high-performance liquid chromatography, and Western blotting were performed to assess changes of astrocytes, adenosine, ADK, and ADK receptors (including A1R, A2aR, A2bR, and A3R) in hippocampus. The expression level of glial fibrillary acidic protein significantly increased from latent to late chronic phase. The concentration of adenosine sharply increased in acute phase and gradually decreased in the remaining phases of post-SE, being significantly lower than in the control group in late chronic phase. Protein levels of A1R and A2aR in post-SE models increased in acute phase, whereas A2bR and A3R protein expression decreased in latent phase, chr...Continue Reading
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