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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
pharmacology, toxicology and pharmaceutics
Isolation and identification of antiplasmodial sesquiterpene lactones from Oncosiphon piluliferum
Journal of Ethnopharmacology, Volume 112, No. 1, Year 2007
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Description
Oncosiphon piluliferum (Asteraceae) is used traditionally to treat a variety of ailments, mainly fevers. This prompted the screening of this plant for antiplasmodial properties. The dichloromethane extract of the aerial parts of the plant showed activity in vitro against the chloroquine-sensitive (IC50 2.6 μg/ml) and the chloroquine-resistant (IC50 3.1 μg/ml) strains of Plasmodium falciparum. Through conventional chromatographic techniques and bioassay-guided fractionation, sesquiterpene lactones of the germacranolide and eudesmanolide type displaying significant in vitro antiplasmodial activity (IC50 values ranging from 0.4 to 4.4 μg/ml) were isolated and identified by spectroscopic data. In addition, the cytotoxic effects of the active compounds against Chinese Hamster Ovarian (CHO) cells were evaluated and the compounds were found to be toxic to mammalian cells at similar concentrations. Structure-activity relationships were assessed. © 2007 Elsevier Ireland Ltd. All rights reserved.
Authors & Co-Authors
Pillay, Pamisha
South Africa, Pretoria
The Council for Scientific and Industrial Research
Vleggaar, Robert
South Africa, Pretoria
University of Pretoria
Maharaj, Vinesh Jaichand
South Africa, Pretoria
The Council for Scientific and Industrial Research
Smith, Peter J.D.
South Africa, Cape Town
University of Cape Town
Lategan, Carmen A.
South Africa, Cape Town
University of Cape Town
Statistics
Citations: 38
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.jep.2007.02.002
ISSN:
03788741
Research Areas
Environmental