Yuet Ping Kwan

Learn More
The strategies, or designs, for survival that organisms have evolved in uncertain environments seem to have developed from two different approaches to the problem; (a) prediction, and (b) resilience (HOLLING, 1973). Successful prediction requires accurate identification of the crucial problem posed by a particular habitat, a requirement not easily fulfilled(More)
BACKGROUND The methanol extract of Euphorbia hirta L (Euphorbiaceae), which is used in traditional medicines, was tested for in vivo toxicity. MATERIALS AND METHODS In vivo brine shrimp lethality assay and oral acute toxicity study at single high dose of 5000 mg/kg and observation for 14 days in mice were used to study the toxic effect of E. hirta. (More)
Elaeis guineensis (Arecaceae) is widely used in West African traditional medicine for treating various ailments. An evaluation on the toxicity of extracts of this plant is crucial to support the therapeutic claims. The acute oral toxicity and brine shrimp lethality of a methanolic extract of this plant was tested. Oral administration of crude extract at the(More)
CONTEXT Euphorbia hirta L. (Euphorbiaceae) has been used as a folk remedy in Southeast Asia for the treatment of various ailments. OBJECTIVE The current study evaluates the cytotoxicity, cell-cycle arrest, and apoptotic induction by E. hirta in MCF-7 breast cancer cells. MATERIALS AND METHODS Cytotoxic activity of methanol extract of whole part of E.(More)
  • 1