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Angelopoulos A, Oikonomou E, Antonopoulos A, Theofilis P, Zisimos K, Katsarou O, Gazouli M, Lazaros G, Papanikolaou P, Siasos G, Tousoulis D, Tsioufis K, Vlachopoulos C. Expression of Circulating miR-21 and -29 and their Association with Myocardial Fibrosis in Hypertrophic Cardiomyopathy. Curr Med Chem 2024; 31:CMC-EPUB-138201. [PMID: 38299392 DOI: 10.2174/0109298673286017240103073130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/05/2023] [Accepted: 12/12/2023] [Indexed: 02/02/2024]
Abstract
BACKGROUND Hypertrophic Cardiomyopathy (HCM) is characterized by myocardial hypertrophy, fibrosis, and sarcomeric disarray. OBJECTIVE To evaluate the expression levels of circulating miR-21 and -29 in patients with HCM and their association with clinical characteristics and myocardial fibrosis. METHODS In this case-control study, 27 subjects with HCM, 13 subjects with hypertensive cardiomyopathy, and 10 control subjects were enrolled. Evaluation of patients' functional capacity was made by the six-minute walk test. Echocardiographic measurements of left ventricle systolic and diastolic function were conducted. Cardiac magnetic resonance late gadolinium enhancement (LGE) -through a semiquantitative evaluation- was used in the assessment of myocardial fibrosis extent in HCM patients. The expression of miR-21 and -29 in peripheral blood samples of all patients was measured via the method of quantitative reverse transcription polymerase chain reaction. RESULTS Circulating levels of miR-21 were higher in both hypertensive and HCM (p<0.001) compared to controls, while expression of miR-29 did not differ between the three studied groups. In patients with HCM and LGE-detected myocardial fibrosis in more than 4 out of 17 myocardial segments, delta CT miR-21 values were lower than in patients with myocardial LGE in 3 or fewer myocardial segments (2.71 ± 1.06 deltaCT vs. 3.50 ± 0.55 deltaCT, p=0.04), indicating the higher expression of circulating miR-21 in patients with more extensive myocardial fibrosis. CONCLUSION MiR-21 was overexpressed in patients with HCM and hypertensive cardiomyopathy. Importantly, in patients with HCM, more extensive myocardial fibrosis was associated with higher levels of miR-21.
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Affiliation(s)
- Andreas Angelopoulos
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - Evangelos Oikonomou
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, University of Athens Medical School, Athens, Greece
| | - Alexios Antonopoulos
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - Panagiotis Theofilis
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - Konstantinos Zisimos
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, University of Athens Medical School, Athens, Greece
| | - Ourania Katsarou
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, University of Athens Medical School, Athens, Greece
| | - Maria Gazouli
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - George Lazaros
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - Paraskevi Papanikolaou
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - Gerasimos Siasos
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, University of Athens Medical School, Athens, Greece
| | - Dimitrios Tousoulis
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - Konstantinos Tsioufis
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
| | - Charalambos Vlachopoulos
- Unit for Inherited and Rare Cardiovascular Diseases, 1st Department of Cardiology, Hippokration Hospital, University of Athens Medical School, Athens, Greece
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