Common Names: septicweed
Researchers investigated an herbal combination of four African medicinal plants known as PHELA as a potential therapy for COVID-19. In vitro testing found that PHELA inhibited > 90% of SARS-CoV-2 and SARS-CoV infection as well as close to 100% of MERS-CoV infection. In silico docking studies showed strong binding energy interactions between compounds in PHELA and SARS-CoV-2 proteins. PHELA has potential as a COVID-19 therapeutic.
Senna occidentalis, a plant that can be ingested accidentally by humans and animals, was studied in a pig model. Pigs were fed rations containing 5%, 7.5%, and 10% S. occidentalis seeds for 7-11 days. All treated pigs showed symptoms of hepatoencephalopathy, including incoordination, ataxia, and anorexia. Biochemical changes were also observed, such as increased enzyme levels and higher serum bilirubin and ammonia levels. Microscopic analysis showed acute hepatocellular swelling, necrosis in various organs, and damage to astrocytes in the brain. This pig model could be used to study poisoning by S. occidentalis and other conditions leading to hepatoencephalopathy.