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Increased ACE2 Levels and Mortality Risk of Patients With COVID-19 on Proton Pump Inhibitor Therapy

  • Julia J. Liu
  • , Meredith E. Sloan
  • , Anna H. Owings
  • , Erika Figgins
  • , Josee Gauthier
  • , Raad Gharaibeh
  • , Tanya Robinson
  • , Haley Williams
  • , Campbell B. Sindel
  • , Fremel Backus
  • , Krishna Ayyalasomayajula
  • , Adam Parker
  • , Michal Senitko
  • , George E. Abraham
  • , Brian Claggett
  • , Bruce H. Horwitz
  • , Christian Jobin
  • , Robert M. Adelman
  • , Gill Diamond
  • , Sarah C. Glover
  • University of Arkansas for Medical Sciences
  • Morehouse School of Medicine
  • University of Mississippi
  • University of Louisville
  • University of Florida
  • Brigham and Women’s Hospital
  • Boston Children's Hospital

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

INTRODUCTION:Proton pump inhibitor (PPI) use was recently reported to be associated with increased severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and worse clinical outcomes. The underlying mechanism(s) for this association are unclear.METHODS:We performed a prospective study of hospitalized coronavirus disease 2019 (COVID-19) patients and COVID-negative controls to understand how PPI use may affect angiotensin-converting enzyme 2 (ACE2) expression and stool SARS-CoV-2 RNA. Analysis of a retrospective cohort of hospitalized patients with COVID-19 from March 15, 2020 to August 15, 2020 in 6 hospitals was performed to evaluate the association of PPI use and mortality. Covariates with clinical relevance to COVID-19 outcomes were included to determine predictors of in-hospital mortality.RESULTS:Control PPI users had higher salivary ACE2 mRNA levels than nonusers, 2.39 ± 1.15 vs 1.22 ± 0.92 (P = 0.02), respectively. Salivary ACE2 levels and stool SARS-CoV-2 RNA detection rates were comparable between users and nonusers of PPI. In 694 hospitalized patients with COVID-19 (age = 58 years, 46% men, and 65% black), mortality rate in PPI users and nonusers was 30% (68/227) vs 12.1% (53/439), respectively. Predictors of mortality by logistic regression were PPI use (adjusted odds ratio [aOR] = 2.72, P < 0.001), age (aOR = 1.66 per decade, P < 0.001), race (aOR = 3.03, P = 0.002), cancer (aOR = 2.22, P = 0.008), and diabetes (aOR = 1.95, P = 0.003). The PPI-associated mortality risk was higher in black patients (aOR = 4.16, 95% confidence interval: 2.28-7.59) than others (aOR = 1.62, 95% confidence interval: 0.82-3.19, P = 0.04 for interaction).DISCUSSION:COVID-negative PPI users had higher salivary ACE2 expression. PPI use was associated with increased mortality risk in patients with COVID-19, particularly African Americans.

Original languageEnglish
Pages (from-to)1638-1645
Number of pages8
JournalAmerican Journal of Gastroenterology
Volume116
Issue number8
DOIs
StatePublished - Aug 1 2021

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