• Ayşe Çabukusta Acar, Şükran Burçak Yoldaş, Elif Sarıönder Gencer, İlker Öngüç Aycan, and Suat Hayri Sanlı.
• Department of Anesthesiology, Ataturk State Hospital, Antalya-Türkiye.
• Ulus Travma Acil Cerrahi Derg. 2023 Oct 27; 29 (11): 122812361228-1236.

BackgroundThis study aims to investigate whether the expression levels of proteins involved in microRNA (miRNA) biogenesis vary in early- and late-stage traumatic brain injury (TBI) patients and to evaluate its effect on prognosis.MethodsDicer, Drosha, DiGeorge Syndrome Critical Region eight (DGCR8), Exportin5 (XPO5), and Argonaute2 (AGO2) levels were measured in the blood samples of severe TBI patients collected 4-6 h and 72 h after the trauma and compared with the control group. Prognostic follow-up of the patients was performed using the Glasgow Coma Scale score.ResultsThere were no statistically significant changes in the expression of the miRNA biogenesis proteins Dicer, Drosha, DGCR8, XPO5, and AGO2 in patients with severe TBI. However, the expression of Dicer increased in the patients who improved from the severe TBI grade to the mild TBI grade, and the expression of AGO2 decreased in most of these patients. The Dicer expression profile was found to increase in patients discharged from the intensive care unit in a short time.ConclusionMicroRNAs and their biogenesis proteins may guide prognostic and therapeutic decisions for patients with TBI in the future.

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