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  • Title: Candidate microRNAs as prognostic biomarkers in heart failure: A systematic review.
    Author: Figueiredo R, Adão R, Leite-Moreira AF, Mâncio J, Brás-Silva C.
    Journal: Rev Port Cardiol; 2022 Oct; 41(10):865-885. PubMed ID: 36207069.
    Abstract:
    BACKGROUND: Heart failure (HF) is a high prevalent syndrome with significant burden worldwide. B-type natriuretic peptide (BNP) and N-terminal proBNP are the gold standard biomarkers in HF management. Although useful in clinical practice, they have limitations as their expression can be influenced by ventricular function, aging, obesity, renal failure and atrial arrhythmias. MicroRNAs have recently emerged as potential diagnostic and prognostic biomarkers, given that they are related to cell growth, proliferation, differentiation, and metabolism. An increasing amount of research has highlighted some microRNAs for their potential as HF biomarkers. However, different study designs, methods and study groups have led to inconsistent results. METHODS AND RESULTS: We performed a systematic search of available literature on Pubmed and Scopus reporting the prognostic value of microRNAs in HF, followed by a review of risk of bias, according to Quadas Group Standards. Simultaneously, microRNAs' potential as differential diagnosis and severity biomarkers was also analyzed. Studies have described circulating microRNA as potential diagnostic, prognostic, and severity markers. Mir-622, -519 and -499 were significantly related to HF with reduced ejection fraction, whereas miR-22-3p revealed greater ability as a severity biomarker. Let-7i-5p, miR-223-5p, miR-423-5p, miR-21, miR-1306-5p and miR-122 serum expressions presented a consistent correlation with HF prognosis. Furthermore, identified miR targets were associated with signaling pathways already known to be involved in HF progression. CONCLUSION: Several miRs were related to HF pathophysiology and demonstrated potential as biomarkers for disease progression. MicroRNAs have a promising role in HF, and although unquestionable, we require a deeper and broader understanding of their role and function for future research.
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