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miRNA dysregulation in traumatic brain injury and epilepsy: a systematic review to identify putative biomarkers for post-traumatic epilepsy

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Abstract

Traumatic brain injury (TBI) leads to post-traumatic epilepsy (PTE); hence, both TBI and PTE share various similar molecular mechanisms. MicroRNA (miRNA) is a small noncoding RNA that acts as a gene-silencing molecule. Notably, the dysregulation of miRNAs in various neurological diseases, including TBI and epilepsy, has been reported in several studies. However, studies on commonly dysregulated miRNAs and the regulation of shared pathways in both TBI and epilepsy that can identify potential biomarkers of PTE are still lacking. This systematic review covers the peer-review publications of TBI and database studies of epilepsy-dysregulated miRNAs of clinical studies. For TBI, 290 research articles were identified after screening, and 12 provided data for dysregulated miRNAs in humans. The compiled data suggest that 85 and 222 miRNAs are consecutively dysregulated in TBI and epilepsy. In both, 10 miRNAs were found to be commonly dysregulated, implying that they are potentially dysregulated miRNAs for PTE. Furthermore, the targets and involvement of each putative miRNA in different pathways were identified and evaluated. Additionally, clusters of predicted miRNAs were analyzed. Each miRNA’s regulatory role was linked with apoptosis, inflammation, and cell cycle regulation pathways. Hence, these findings provide insight for future diagnostic biomarkers.

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Data availability

The datasets presented in this study are available in online EpimiRBase (https://www.epimirbase.eu/) and Pubmed (https://pubmed.ncbi.nlm.nih.gov/) repository. The names of the repositories can be found in the article/supplementary material.

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Acknowledgements

Author PK is thankful to PGIMER Chandigarh for providing the internet and computer facility. Author PK is also thankful to Dr. L. K. Gautam and Dr. S. Khichi for their support and proofreading of this work.

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The author Prince Kumar confirms being the sole contributor including concept and design, data collection, analysis and writing of manuscript of this work. Author has approved the final manuscript for publication.

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Correspondence to Prince Kumar.

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Ethics approval

This study was performed on already available online datasets and studies. No animal and human is used in this study. Therefore, PGIMER ethics committee has confirmed that no ethical approval is required.

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It is an analytical study on already available dataset. No human subject participation was used. Therefore no consent is required for this study.

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Since no human subject participated in this study. Consent from humans to publish the data is not required.

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The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author declares that there is no competing interests.

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11011_2023_1172_MOESM1_ESM.xlsx

Supplementary file1 Supplementary 1: Experimentally validated dysregulated miRNAs in humans during epilepsy. Data retrieved from EpimiRBase. (Excel file) (XLSX 17 KB)

11011_2023_1172_MOESM2_ESM.xlsx

Supplementary file2 Supplementary 2: Experimentally validated dysregulated miRNAs in humans during TBI. Data derived by systematic peer review. (Excel file) (XLSX 14 KB)

Supplementary file3 (PDF 166 kb)

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Kumar, P. miRNA dysregulation in traumatic brain injury and epilepsy: a systematic review to identify putative biomarkers for post-traumatic epilepsy. Metab Brain Dis 38, 749–765 (2023). https://doi.org/10.1007/s11011-023-01172-z

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  • DOI: https://doi.org/10.1007/s11011-023-01172-z

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