Abstract:
:Valdecoxib is a new anti-inflammatory drug that is highly selective for inhibition of the inducible form of cyclooxygenase (COX-2). In the present study, biotransformation of valdecoxib was investigated in cell cultures of five medicinal plants, viz., Catharanthus roseus, Azadirachta indica, Capsicum annuum, Ervatamia heyneana, and Nicotiana tabacum. Identification of the biotransformed products was carried out by using high-performance liquid chromatography coupled with diode array detection and liquid chromatography--tandem mass spectrometry analysis. All the cultures transformed valdecoxib into more polar compounds, and C. roseus also produced one unknown compound that is less polar than the substrate. The reactions performed by these plant cell cultures include hydroxylation, methylation, and demethylation. Optimization studies were performed to investigate the effect of the day of extraction and substrate concentration on biotransformation.
journal_name
Appl Biochem Biotechnoljournal_title
Applied biochemistry and biotechnologyauthors
Molmoori V,Srisailam K,Ciddi Vdoi
10.1007/s12010-007-8102-2subject
Has Abstractpub_date
2008-03-01 00:00:00pages
201-12issue
3eissn
0273-2289issn
1559-0291journal_volume
144pub_type
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