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    Does COVID-19-related viral sepsis stimulate angiotensin II levels more than bacterial sepsis?
    (Bayrakol Medical Publisher, 2023) Demircan, Selcuk; Bulut, Niluefer; Kalkan, Serkan; Duzenci, Deccane; Bicakcioglu, Murat; Ozden, Mehmet; Dogan, Zafer
    Aim: Angiotensin II and its receptors play a role in both COVID and bacterial sepsis. The aim of this study was to compare the levels of serum angiotensin II and its receptors in viral sepsis due to COVID-19 with the levels in bacterial sepsis.Material and Methods: The study included 62 sepsis patients (n=31 COVID and n=31 non-COVID) with similar disease severity in the tertiary ICU. The serum angiotensin II, angiotensin II receptors 1 and 2 (ATR1, ATR2) and other inflammatory parameters were measured. Demographic data and 28-day mortality were recorded.Results: Angiotensin II level was significantly higher in COVID patients than in non-COVID patients (p<0.05). ATR1 and ATR2 did not differ between the two groups. There was a negative correlation between angiotensin II and procalcitonin levels in all patients, and a positive correlation between ATR1 and procalcitonin, APACHE II score, and SOFA score in COVID patients (p<0.05).Discussion: Observation showed that angiotensin II levels were higher in patients with COVID-19 compared to those with bacterial sepsis, and ATR1 level was higher in COVID-19 patients who died. It was thought that the renin-angiotensin cascade could be stimulated differently in bacterial sepsis compared to viral sepsis due to COVID.