id author title date pages extension mime words sentences flesch summary cache txt cord-318358-glbr8kxh Naik, George O A COVID-19 and the RAAS 2020-06-20 .txt text/plain 715 64 54 Further to Thomas Hanff et al [1] timely call for epidemiological and clinical investigations of COVID-19 infectious disease, measurements of the renin angiotensin aldosterone system (RAAS) components, as sub-studies would be insightful of this pandemic. Angiotensin-converting enzyme 2 (ACE 2) participates in the coronavirus (SARS-CoV-2) cell entry. Drugs that block RAAS also affect ACE 2 expression: it is down regulated by renin inhibition (RI) and up regulated by angiotensin-converting enzyme inhibitors (ACEIs), angiotensin receptor blockers (ARBs) (1) and mineralocorticoid receptor antagonists (MRAs) [2] . Such perturbations would also indirectly influence other RAAS components, and the coordination between circulating and local tissue expressions, as shown in Figure 1 ACE 2 is distributed throughout the body and is abundantly expressed in the lung, small intestine, and in blood vessels of many organs including the brain, heart, kidney and testis [4] . Mineralocorticoid receptor blocker increases angiotensin-converting enzyme 2 activity in congestive heart failure patients ./cache/cord-318358-glbr8kxh.txt ./txt/cord-318358-glbr8kxh.txt