Bork, P.M., Schmitz, M.L., Kuhnt, M., Escher, C. and Heinrich, M. (1997) Sesquiterpene lactone containing Mexican Indian medicinal plants and pure sesquiterpene lactones as potent inhibitors of transcription factor NF-kappaB. FEBS letters, 402 (1). pp. 85-90. 10.1016/S0014-5793(96)01502-5.
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The potential inhibitory effect of 54 Mexican Indian medicinal plants on the activation of transcription factor NF-kappaB was studied. Band-shift experiments identified the ethanolic leaf extracts of Artemisia ludoviciana ssp. mexicana, Calea zacatechichi, and Polymnia maculata (all rich in sesquiterpene lactones) as inhibitors of NF-kappaB down to a concentration of 25 microg/ml. The sesquiterpene lactones isohelenin and parthenolide prevented NF-kappaB activation completely as low as 5 microM. Treatment of HeLa cells with leaf extract of A. ludoviciana ssp. mexicana, isohelenin and parthenolide prevented the induction of transcription on the IL-6 promoter. These experiments identify the eudesmanolide and germacranolide type of sesquiterpene lactones as potent non-antioxidant inhibitors of NF-kappaB. All plants active in the NF-kappaB assay also showed a delay in the onset of capillary reactions of the allantois membrane in a physiological model for anti-inflammatory activity - the HET-CAM assay.
|Departments, units and centres:||Department of Pharmaceutical and Biological Chemistry > Centre for Pharmacognosy and Phytotherapy|
|Journal or Publication Title:||FEBS letters|
|Deposited By:||Library Staff|
|Deposited On:||09 Jun 2011 17:40|
|Last Modified:||09 Jun 2011 17:49|
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