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The genomic action of calcitriol (1,25-dihydroxy-vitamin D3) is mediated through the interaction of the calcitriol receptor (VDR) with vitamin D response elements (VDREs). Although renal failure is associated with resistance to the action of calcitriol, the mechanism of this resistance is not well understood. Therefore, we used the electrophoretic mobility(More)
The biological action of calcitriol is mediated through a hormone-receptor complex interacting with nuclear chromatin. Interaction of the calcitriol receptor (VDR) with VDR response elements produces bioactive proteins which carry out the physiological actions of calcitriol. Since biological response to calcitriol appears to be diminished in renal failure,(More)
Homologous up-regulation of calcitriol receptor (VDR) by calcitriol is believed to be a transcriptional event. In this experiment, we studied the effect of calcitriol on VDR in normal and renal failure rats. The time course of the effect of calcitriol on VDR mRNA showed a biphasic change in VDR mRNA in response to calcitriol. The concentration of intestinal(More)
Results of permeation tests of several glove materials challenged with semiconductor processing formulations containing glycolether derivatives are described. Commercial glove samples of nitrile rubber (Edmont), natural rubber (Edmont and Baxter), butyl rubber (North), PVC Baxter), a natural rubber/neoprene/nitrile blend (Pioneer), and a natural(More)
We have demonstrated that in renal failure calcitriol degradation is decreased and that administration of vitamin D metabolites increases the degradation. In this study, we measured intestinal 24- and 26-hydroxylase activities and the effects of chronic infusion (7 days) of vitamin D metabolites on these enzymes' activities in rats with experimental renal(More)
The use of Fast-GC was investigated for the separation and analysis of mixtures of organic vapors in ambient air. Mixtures of up to 34 components were separated and total analysis times ranged from 8 to 100 seconds. Analyses were performed using both flame ionization and electron capture detectors. Up to 950 effective theoretical plates per second were(More)
Gas chromatography has the potential to be a very fast method of air monitoring in the workplace and the community. The use of "fast" gas chromatographic (GC) instrumentation and methods may allow the completion of analyses in less than 10 sec when a flame ionization detector is used and in less than 30 sec when an electron capture detector is used. In this(More)
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