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This review article explores whether the use of renin–angiotensin system (RAS) inhibitors in cardiovascular patients should be reassessed in the setting of SARS-CoV-2, which is mediated by binding to ACE2 in the RAS.
The authors conclude that, for patients with cardiovascular disease and SARS-CoV-2, RAS inhibitors may provide protective support. Further research is needed to determine whether regulation of ACE2 in these patients would improve clinical outcomes.
This abstract is available on the publisher's site.
Severe acute respiratory-syndrome coronavirus-2 (SARS-CoV-2) host cell infection is mediated by binding to angiotensin-converting enzyme 2 (ACE2). Systemic dysregulation observed in SARS-CoV was previously postulated to be due to ACE2/angiotensin 1-7 (Ang1-7)/Mas axis downregulation; increased ACE2 activity was shown to mediate disease protection. Because angiotensin II receptor blockers, ACE inhibitors, and mineralocorticoid receptor antagonists increase ACE2 receptor expression, it has been tacitly believed that the use of these agents may facilitate viral disease; thus, they should not be used in high-risk patients with cardiovascular disease. Based on the anti-inflammatory benefits of the upregulation of the ACE2/Ang1-7/Mas axis and previously demonstrated benefits of lung function improvement in SARS-CoV infections, it has been hypothesized that the benefits of treatment with renin-angiotensin system inhibitors in SARS-CoV-2 may outweigh the risks and at the very least should not be withheld.