The detoxication of the enantiomers of glycidyl 4-nitrophenyl ether (GNPE), (-)-(R)- and (+)-(S)-GNPE, and glycidyl 1-naphthyl ether (GNE), (-)-(R)- and (+)-(S)-GNE, by rat liver glutathione transferase and epoxide hydrolase was studied. Enantioselectivity was observed with both enzymes favoring the (R)-isomers as determined by the formation of conjugate, diol, and remaining substrate measured ...

Rho family GTPases (including Rac, Rho and Cdc42) collectively control cell proliferation, adhesion and migration and are of interest as functional therapeutic targets in numerous epithelial cancers. Based on high throughput screening of the Prestwick Chemical Library® and cheminformatics we identified the R-enantiomers of two approved drugs (naproxen and ketorolac) as inhibitors of Rac1 and Cd...

PURPOSE To determine if gender is a significant variable for in vivo magnetic resonance imaging (MRI) T2-mapping of knee articular cartilage in young asymptomatic volunteers. MATERIALS AND METHODS Cartilage MRI T2 mapping was performed in a young healthy population consisting of seven male and 10 female volunteers, 22 to 29 years of age. High-resolution in vivo T2 maps were obtained of patell...

Growth arrest DNA damage-inducible 45a gene (Gadd45a) and immediate early response gene 5 (Ier5) have been emphasised as ideal radiation biomarkers in several reports. However, some aspects of radiation-induced transcriptional alterations of these genes are unknown. In this study, gender-dependency and dose-dependency as two factors that may affect radiation-induced transcription of Gadd45a and...

As protein is both a structural component and metabolic intermediary, amino acids play crucial function in the body. When it comes to proteins, only L-configuration of chiral found. At molecular level, symmetry disrupted; however, scientific basis for this breaking not yet known. Enantioanalysis compounds such as plays very important role correct diagnosis illnesses, cancer. The enantiomers glu...

An atomistic calculation of the interaction between peptide motifs and enantiomeric odorant molecules (carvone and camphor) is performed. The peptide motifs are mimics of segments of the helical receptor structure. The model shows that the enantiomers of carvone have distinctly different interaction profile with all peptides considered, but the enantiomers of camphor do not exhibit any signific...

A simple reversed-phase chiral HPLC method has been developed and validated for direct separation of the enantiomers of zaltoprofen. Separation of the enantiomers was tested on numerous commercial chiral HPLC columns. Separation was best (resolution, RS = 3) on a Chiralcel OJ-RH stationary phase. Typical retention times of the S and R enantiomers were approximately 14 and 16 min, respectively. ...

The sodium salt of the single-isomer, chiral resolving agent, octakis(2,3-diacetyl-6-sulfo)-g-cyclodextrin (ODAS-gCD) has been used for the capillary electrophoretic separation of the enantiomers of alkylarylphosphates which carry a phosphorus-based stereogenic center. The effective mobilities and separation selectivities were measured at different ODAS-gCD and methanol concentrations to find t...

The enantiomers of XYLNAc (2-N-acetylamino-1,2,4-trideoxy-1,4-iminoxylitol) are prepared from the enantiomers of glucuronolactone; the synthesis of the enantiomers of LYXNAc (2-N-acetylamino-1,2,4-trideoxy-1,4-iminolyxitol) from an L-arabinono-δ-lactone and a D-ribono-δ-lactone is reported. A comparison is made of the inhibition of β-N-acetylhexosaminidases (HexNAcases) and α-N-acetylgalactosam...

While much has been written about the medical, economic, and social causes of cross-national differences in some mortality related phenomena such as in life expectancy and infant mortality, much less attention has been given to maternal mortality, the focus of the present study. In the studies of maternal mortality that have been done, there has been very little effort to assess the potential r...