Genomics

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Discovery and validation of circulating microRNAs as biomarkers for epileptogenesis after experimental traumatic brain injury – the EPITARGET cohort


ABSTRACT: Purpose: Traumatic brain injury (TBI) causes 10%–20% of structural epilepsies and 5% of all epilepsies. The lack of prognostic biomarkers for post-traumatic epilepsy (PTE) is a major obstacle to the development of anti-epileptogenic treatments. In this study, we conducted high throughput small RNA-Seq analysis from tail-vein plasma samples collected from a rat model of PTE to discover miRNA biomarker candidates that could serve as prognostic biomarkers for brain damage severity and the development of PTE. Methods: Epileptogenesis was induced in adult male Sprague-Dawley rats by the lateral fluid-percussion-induced TBI. Epilepsy was defined as the occurrence of at least 1 unprovoked seizure during continuous 1-month video-electroencephalography monitoring in the sixth post-TBI month. Small RNA-seq was performed from tail-vein plasma samples collected from a subset of 20 animals (4 sham-operated controls, 7 TBI rats with epilepsy, 9 TBI rats without epilepsy) at 2 days and 9 days post-TBI. RNA was extracted from 200 μl plasma using an miRNeasy Mini Kit. Small RNA-Seq was conducted by GenomeScan (Leiden, the Netherlands). Small RNA library preparation was performed using the Illumina TruSeq Small RNA Sample Prep Kit. Single-end sequencing was performed on the Illumina HiSeq 4000.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE222801 | GEO | 2023/02/10

REPOSITORIES: GEO

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