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Fimasartan, an angiotensin II receptor antagonist, ameliorates an in vivo zebrafish model of heart failure

Korean Journal of Internal Medicine 2020년 35권 6호 p.1400 ~ 1410
전혜련, 오규철, 석성혁, 이해영,
소속 상세정보
전혜련 ( Quan Hailian ) - Seoul National University College of Medicine Department of Microbiology and Immunology
오규철 ( Oh Gyu-Chul ) - Seoul National University College of Medicine Department of Internal Medicine
석성혁 ( Seok Seung-Hyeok ) - Seoul National University College of Medicine Department of Microbiology and Immunology
이해영 ( Lee Hae-Young ) - Seoul National University College of Medicine Department of Internal Medicine

Abstract


Background/Aims: Angiotensin II in the failing heart initially helps to maintain cardiac output and blood pressure, but ultimately accelerates its deterioration. In this study, we established a model of arrhythmia-induced heart failure (HF) in zebrafish and investigated the role of renin-angiotensin-aldosterone system (RAAS) modulation by using an angiotensin II type 1 receptor blocker, fimasartan, through the assessment of cellular and physiologic responses, morbidity, and mortality.

Methods: HF was induced in zebrafish larvae by exposure to 20 μM terfenadine. Morphologic, physiologic, and functional parameters were assessed in the presence or absence of fimasartan treatment.

Results: Zebrafish exposed to terfenadine showed marked dilatation of the ventricle and reduced systolic function. Treatment with terfenadine was associated with 10-fold higher expression of atrial natriuretic peptide (p < 0.001 vs. vehicle), increased p53 mRNA expression, and chromatin fragmentation in the TUNEL assay, all of which were significantly reduced by fimasartan treatment. Moreover, fimasartan improved fractional shortening (terfenadine + fimasartan 16.9% ± 3.1% vs. terfenadine + vehicle 11.4% ± 5.6%, p < 0.05) and blood flow (terfenadine + fimasartan 479.1 ± 124.1 nL/sec vs. terfenadine + vehicle 273.0 ± 109.0 nL/sec, p < 0.05). Finally, treatment with fimasartan remarkably reduced mortality (terfenadine + fimasartan 36.0% vs. terfenadine + vehicle 96.0%, p < 0.001).

Conclusions: Fimasartan effectively protected against the progression of HF in zebrafish by improving hemodynamic indices, which improved survival. A reduction in apoptotic cell death and an improvement in hemodynamics may be the mechanisms behind these effects. Further human studies are warranted to evaluate the possible role of fimasartan in the treatment of HF.

키워드

Heart failure; Angiotensin receptor blockers; Renin angiotensin system; Zebrafish; Terfenadine

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