In a new study from Denmark, Germany and Hong Kong, researchers found that extracts from the artemisia annua plant may fight against the SARS-CoV-2 virus.
They found three extracts of the artemisia annua plant could combat the SARS-CoV-2 virus in human lung tissue.
While the main focus of the pandemic has in recent months become the vaccines that are effective for the prevention of COVID-19, work continues on treatments for those unvaccinated people who become infected with the SARS-CoV-2 virus.
Artemisia annua is wormwood and is found in parts of Asia and North America. It is known commonly by a variety of names, such as sweet wormwood or sweet Annie.
Its extracts are used as malaria treatments, and the most common treatment types are artemisinin-based.
Derivatives of artemisinin include artesunate and artemether, both of which are used to treat malaria patients and come with a proven safety record.
In this study, the researchers sought to determine whether artemisinin or its derivatives might be effective for the treatment of COVID-19 patients.
To find out, they infected human tissue with the SARS-CoV-2 virus in petri dishes and then added artemisinin or its derivatives.
More specifically, the researchers first tested the extract and its derivatives on African green monkey kidney cells and found it to be effective against a strain of the SARS-CoV-2 virus variant that emerged in Germany recently.
They then tested the extract and its derivatives against a Danish variant, also using kidney cells from the same type of monkey.
Once again finding success, they then tested the extract and its derivatives with the Danish variant in human lung cells and found all three of the test therapies to be active against the virus, inhibiting infection.
More specifically, they found artesunate to be the most effective, followed by artemether and then artemisinin. The team plans to follow up their efforts by conducting clinical trials.
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The study is published in Scientific Reports. One author of the study is Yuyong Zhou.
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