Original Article

Efficacy of Optimal Dosage of Lisinopril in Inhibiting Myofibroblast Differentiation for Attenuating Rheumatic Heart Disease Progression (RHD): An In Vitro Study

Abstract

Background: Chronic inflammation of RHD occurs and releasing proinflammatory cytokines, including Transforming Growth Factor β1 (TGF-β1) which induces myofibroblast differentiation. This differentiation plays crucial role on resulting fibrosis and calcification of the heart valve. This cascade of inflammation presents an opportunity for the use of antifibrotic agents such as angiotensin-converting enzyme (ACE) Inhibitor. However, no study provided an optimum dose nor comparison of various Lisinopril doses.

Methods: This study is an in vitro posttest-only control group study. Valvular Interstitial Cell (VIC) were obtained from New Zealand rabbit (Oryctolagus cuniculus) heart valves. Valve interstitial cells were divided into five groups of exposure TGF-β1 and various Lisinopril doses (1 µM, 10 µM, 100 µM). The effect of Lisinopril on myofibroblastic differentiation was evaluated by measuring αSMA expression using immunocytochemical methods. Statistical significance was determined using an independent T-test with a p-value < 0.05.

Results: The result of independent T test indicated a significantly lower αSMA expression in the group given Lisinopril at various doses compared to the group only induced by TGF-β1 (Lisinopril dose 1 µM, 10 µM, 100 µM; p<0.05). The lowest and most significant amount of αSMA expression was found in Lisinopril at a dose of 100 µM.

Conclusion: Lisinopril inhibited TGF-β1-induced myofibroblast development in rabbit valve interstitial cells at dosages of 1 µM, 10 µM, and 100 µM. The lowest fibrosis marker was observed with Lisinopril 100 µM.

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Keywords
Lisinopril Rheumatic heart disease Valvular interstitial cell Myofibroblast Transforming Growth Factor β1

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1.
Lefi A, Asmarani D, Dharmadjati B, Suwanto D, Saputra M, Pravitasari V, Anandita F. Efficacy of Optimal Dosage of Lisinopril in Inhibiting Myofibroblast Differentiation for Attenuating Rheumatic Heart Disease Progression (RHD): An In Vitro Study. J Tehran Heart Cent. 2024;.