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Heart disease medications may reduce severity of COVID-19, finds study
Statins and anti-hypertension medications stabilize the underlying diseases for which they are prescribed, making patients more likely to recover from COVID-19.
USA: Patients taking statin medications before hospitalization for COVID-19 were at lower risk of death, particularly those with a history of CVD and/or hypertension, show results from a new study by researchers from University of California San Diego School of Medicine.
The study, published in the journal PLOS One, supports the continuation and aggressive initiation of anti-hypertensive therapies and statins in patients at risk for COVID-19.
Statins are commonly used to reduce blood cholesterol levels by blocking liver enzymes responsible for making cholesterol. They are widely prescribed: The Centers for Disease Control estimates that 93 percent of patients who use a cholesterol-lowering drug use a statin.
"When faced with this virus at the beginning of the pandemic, there was a lot of speculation surrounding certain medications that affect the body's ACE2 receptor, including statins, and whether they may influence COVID-19 risk," said Lori Daniels, MD, lead study author, professor, and director of the Cardiovascular Intensive Care Unit at UC San Diego Health.
"At the time, we thought that statins may inhibit SARS-CoV-2 infection through their known anti-inflammatory effects and binding capabilities, which could potentially stop the progression of the virus."
Using data from the American Heart Association's COVID-19 Cardiovascular Disease Registry, the research team at UC San Diego applied their original findings to a much larger cohort: more than 10,000 hospitalized COVID-19 patients across the United States.
Specifically, researchers analyzed anonymized medical records of 10,541 patients admitted for COVID-19 over a nine-month period, January through September 2020, at 104 different hospitals.
"From this data, we performed more advanced analyses as we attempted to control for coexisting medical conditions, socioeconomic status and hospital factors," said Daniels. "In doing so, we confirmed our prior findings that statins are associated with a reduced risk of death from COVID-19 among patients hospitalized for COVID-19."
Daniels said it appears most of the benefit is among patients with good medical reasons to be taking statins, such as a history of cardiovascular disease or high blood pressure. According to the research team, the use of statins or an anti-hypertension medication was associated with a 32 percent lower risk of death among COVID-19 inpatients with a history of cardiovascular disease or hypertension.
In the study, statistical matching techniques were used to compare outcomes for patients who used statins or an anti-hypertension medication with similar patients who did not.
"We matched each patient to one or more similar patients, using hospital site, month of admission, age, race, ethnicity, gender, and a list of pre-existing conditions, in order to make the two groups as comparable as possible" said Karen Messer, PhD, study co-author and professor of biostatistics at UC San Diego School of Medicine.
The ACE2 receptor -- the regulatory target of statins -- helps control blood pressure. In 2020, it was discovered that the SARS-CoV-2 virus primarily uses the same receptor to enter lung cells.
According to researchers, statins and anti-hypertension medications stabilize the underlying diseases for which they are prescribed, making patients more likely to recover from COVID-19.
"As with any observational study, we cannot say for certain that the associations we describe between statin use and reduced severity of COVID-19 infection are definitely due to the statins themselves; however, we can now say with very strong evidence that they may play a role in substantially lowering a patient's risk of death from COVID-19," said Daniels. "We hope that our research findings are an incentive for patients to continue with their medication."
The initial study included 170 anonymized medical records from patients receiving care at UC San Diego Health. Researchers found that statin use prior to hospital admission for COVID-19 resulted in a more than 50 percent reduction in risk of developing severe infection.
The American Heart Association's COVID-19 Cardiovascular Disease Registry contains de-identified health data on patients treated for COVID-19 at more than 140 participating hospitals across the country. As of July 2021, data from more than 49,000 patient records had been contributed into the platform.
Reference:
The study titled, "Relation of prior statin and anti-hypertensive use to severity of disease among patients hospitalized with COVID-19: Findings from the American Heart Association's COVID-19 Cardiovascular Disease Registry," is published in the journal Plos One.
DOI: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0254635
Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email:Â editorial@medicaldialogues.in. Contact no. 011-43720751
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751