These chemical substances all contribute to the anticoagulant, antithrombotic, histone deacetylase inhibitor antioxidant, as well as other biological activities of danshen.
However, tanshinone IIA and cryptotanshinone, but not tanshinone I, are capable of escalating human PXR transcriptional activity when analyzed at a concentration of 2 ?M. Danshen may well also be an activator of mouse PXR, as recommended by the nding that an ethyl acetate extract of danshen increases hepatic microsomal CYP3A protein ranges in mice. It remains to become determined histone deacetylase inhibitor whether danshen has any PXR activating effects in humans, given that it is usually ingested as extracted powder or as one of the several herbs as part of a traditional Chinese medicine regimen. Schisandra chinensis is a deciduous woody vine found in the northwestern China, far eastern Russia, and Korea. As one of the commonly used herbs in traditional Chinese medicine, the berries of S.
Consistent with the nding that wu wei zi extract activates human PXR, it is also capable of increasing CYP2C9 and CYP3A4 gene expression in primary cultures of human hepatocytes. Experiments with individual dibenzocyclooctene lignans indicate that schisandrol B, schisandrin A, and schisandrin IEM 1754 B activate human PXR with a similar efcacy and potency as rifampicin. Relative to these compounds, schisandrol A is also efcacious, but it is less potent. Wu wei zi extract and the four dibenzocyclooctene lignans are also able to activate mouse and rat PXR. Tian xian is a Chinese herbal remedy that consists of multiple herbs, including Hedyotis diffusae, Radix ginseng, Radix astragali, Polyporus umbellatus, Radix clematidis, Radix trichosanthis, Semen impatientis, Solanium nigrum, Calculus bovis, and Venenum bufonis.
Tian IEM 1754 xian extract also increases the expression of a PXR target gene in cultured hepatocytes from transgenic mice expressing human CYP3A4. The PXR activating effect of tian xian is not species specic because it also appears to be an activator of mouse PXR, as suggested by the nding that it induces hepatic Cyp3a11 gene expression in wild type mice but not in PXR knockout mice.
Wednesday, February 27, 2013
Strategies In order to Greatly Enhance histone deacetylase inhibitor IEM 1754 On A Tight Budget
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