Traditional medicinal plant holds potential to combat drug-resistant malaria

Canada: A team of researchers have identified compounds in the leaves of a particular medicinal Labrador tea plant used throughout the First Nations of Nunavik, Canada, and demonstrated that one has activity against the parasite responsible for malaria. The researchers reported their findings in ACS Omega.

“Labrador tea” refers to multiple, closely related plants-all members of the genus Rhododendron. As their name suggests, these are small, evergreen shrubs with fuzzy leaves that are steeped to make herbal teas commonly used by the Inuit and Indigenous nations in the U.S. and Canada. Reportedly, drinks made from the leaves or roots can aid in treating colds or the flu, headaches or stomach aches, nasal congestion and many other ailments. Past studies have shown that essential oils extracted from the plants have antimicrobial properties, which could help fight antibiotic-resistant microbes. Dwarf Labrador tea, or Rhododendron subarcticum, produces a particularly aromatic brew and grows in the harsher conditions of the subarctic, found from Alaska to Siberia just south of the Arctic Circle. Despite its common use as a traditional medicine, its chemical composition and potential antimicrobial applications remain relatively unstudied. So, Normand Voyer and colleagues wanted to characterize the makeup of R. subarcticum for the first time and test its antiparasitic activity.