Perindopril decreases angiotensin-converting enzyme 2 (ACE2) expression in human adipocytes exposed to SARS-CoV-2 S1 spike protein.

The expression of angiotensin-converting enzyme 2 (ACE2) in the adipose tissues of obese patients needs further study, as it may aid infection and serve as a viral reservoir. There has been controversy over whether to use ACE inhibitors to prevent coronavirus disease 2019 (COVID-19) severity. Perindopril, an ACE2 inhibitor, has been proposed; however, its relationship with COVID-19 has not yet been clear. The aim of this study was to investigate the effect of perindopril to reduce the expression of ACE2 and pro-inflammatory cytokine in adipocytes exposed to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Enzymatic isolation of adipose tissues was performed from obese male donor patients aged 30-50 years, then exposed it with SARS-CoV-2 S1 spike protein. This study also included human recombinant ACE2 (hrsACE2) as a comparison to perindopril. The expression of ACE2 was evaluated using ELISA. Our data indicated that SARS-CoV-2 Spike protein exposure increased ACE2 expression significantly. Administration of perindopril decreased ACE2 expression (43.37 μg/mL) significantly compared to the positive group (80.31 μg/mL) (

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All the authors declare that there are no conflicts of interest.