id author title date pages extension mime words sentences flesch summary cache txt cord-294571-qd0qjo3y Rothan, Hussin A. Molecular Aspects of COVID-19 Differential Pathogenesis 2020-07-06 .txt text/plain 3246 173 43 Angiotensin-converting enzyme-2 (ACE2) represents the primary SARS-CoV-2 entry receptor, and its physiological role is crucial in the progress of COVID-19 illness. Previous studies on SARS-CoV-1 reported that the binding of viral spike (S) protein to ACE2 downregulates the expression of ACE2, resulting in a diminished protective role of ACE2 and, subsequently, acute respiratory failure [52] . The levels of ACE2 expression, which could be sex-and age-dependent, have a protective role against lung and kidney injuries that could impact the severity of COVID-19 illness in male vs. The susceptibility of cardio-metabolic patients to develop severe COVID-19 illness and the high mortality rate could be linked to the ACE2 function during SARS-CoV-2 infection and the cardio-metabolic treatments that may interfere with ACE2-virus interaction. Previous studies on SARS-COV-1 reported that the binding of viral S protein to ACE2 downregulates the expression of ACE2, resulting in a diminished protective role of ACE2 and, subsequently, acute respiratory failure [52] . ./cache/cord-294571-qd0qjo3y.txt ./txt/cord-294571-qd0qjo3y.txt