Objectives: The study involving 20 SARS CoV patients found that elevated microRNA levels, specifically miR-23a overexpression and miR-195-F1gene downregulation, could serve as potential diagnostic factors for COVID-19 infections, potentially aiding in early detection. Materials and Methods: 20 patients suffered from coronavirus (SARS CoV) (Patient group) and ten samples of healthy persons (control group). The blood sample was collected from the patients who attended Al-Zafaraniyah General Hospital, Fatima-Alzahra Hospital, and Al-Yarmook Teaching Hospital in Baghdad City. Nasopharyngeal and oropharyngeal swabs for each patient were taken simultaneously and added immediately into viral transport media (VTM). The microRNAs in the serum of coronavirus (SARS CoV patients were miRNA concentration upon conversion to cDNA is necessary to analyze and compute regulatory element levels of one or more genes—all procedures, including data analysis, qPCR amplification, and total RNA purification. Results: The miR-23a-3p levels were markedly elevated, and serum levels of the miR-195-F1 gene were shown to be substantially downregulated in COVID-19 individuals. Keywords: miR-23a, COV, SARS, qPCR, RT-PCR, cDNA, VTM. Conclusions: The study reveals that COVID-19 patients exhibit increased expression levels of miR-23a-3p and miR-195-F1gene, suggesting it as a potential diagnostic indicator for COVID-19 diagnosis and treatment monitoring.
