Wednesday, May 5, 1999 Published at 19:12 GMT 20:12 UK
Ancient remedy for TB menace
Traditional healers make medicine from local plants
A plant used by traditional healers in Africa has proved to be effective in combating a strain of tuberculosis that is resistant to modern drug therapies.
However, some strains of the bacteria that cause the disease have started to evolve antibiotic resistance, making effective drug therapy increasing difficult.
The disease kills thousands of people throughout the developing world, and is also re-emerging in industrialised countries.
In Pretoria, traditional healers like Matlakala Mosiweu use local plants to treat TB symptoms such as coughing and fever.
She said: "The plants are good because you dig them straight out from the soil, so they are fresh - everything that is from the soil is good."
A team from the University of Pretoria is working closely with healers such as Matlalaka to test the healing powers of local plants.
Among the scientists working on the project is Namrita Lall, who lost one of her relatives to the disease.
"A lot of substances that are used in modern medicine have originated from research on medicinal plants ," she said.
Deadly strain killed
The scientists have tested 20 plants to try to isolate an active compound that can be used to attack the TB bacteria.
An extract from the plant was able to kill a strain of TB that is resistant to seven major drugs.
The results are so impressive that a major drugs company has expressed an interest taking the research further.
Scientists also believe there may be cures for other diseases such as malaria from other plants growing in Africa.