Now showing items 21-30 of 992
Cortisol response to a psychological stressor and/or nicotine
(Elsevier, 1990-05)
The effects of a psychological stressor and nicotine upon corticosteroid release were investigated using a full factorial, repeated-measures design in eight moderate smokers. Sessions involved the presentation of either ...
cDNA and derived amino acid sequence of rabbit nasal cytochrome P450NMb (P450IIG1), a unique isozyme possibly involved in olfaction
(Elsevier, 1991-02-15)
Olfactory-specific cytochrome P450NMb was previously purified to electrophoretic homogeneity from microsomes of rabbit nasal mucosa in this laboratory. In the present study, a cDNA library made from poly(A)+ RNA from rabbit ...
Actin polymerization in cellular oxidant injury
(Elsevier, 1991-08-01)
Microfilaments undergo an ATP-dependent disruption into shortened bundles following cellular exposure to oxidants. This phenomenon does not require a net change in the amount of polymerized actin. However, increased amounts ...
Selective inhibition by alcohol and cortisol of natural killer cell activity of lymphocytes from cord blood
(Elsevier, 1994-12)
1. 1. The immunosuppressive effects of drugs such as alcohol or hormones such as cortisol may be age-related. To test this hypothesis, the authors investigated the in vitro effects of ethanol (EtOH) and cortisol on Natural ...
Thermodynamics of iron sulfides I. Heat capacity and thermodynamic properties of Fe9S10 at temperatures from 5 K to 740 K
(Elsevier, 1991-03)
Measurements of the heat capacity of Fe9S10 over the temperature range 5 K to 740 K reveal a first-order structural transition at 495 K and two higher-order transitions with maxima at 534 K and 591 K. The last two are of ...
Hormonal regulation of steroidogenic enzyme gene expression in Leydig cells
(Elsevier, 1992-12)
In normal mouse Leydig cells, steady state levels of mRNA of CYP11A, 3[beta]-hydroxysteroid dehydrogenase [Delta]5- > [Delta]4-isomerase (3[beta]HSD), and CYP17 are differentially regulated. There is high basal expression ...
Synthesis of normal and variant human hypoxanthine-guanine phosphoribosyltransferase in Escherichia coli
(Elsevier, 1993-01-30)
Naturally occurring mutations in hypoxanthine-guanine phosphoribosyltransferase (HPRT) have been identified by amino acid sequencing, cDNA cloning, and direct nucleotide sequencing of PCR-amplified transcripts. To determine ...
On performing experimental studies on transient states of continuous-flow methanogenic reactors
(Wiley Subscription Services, Inc., A Wiley Company, 1990-03-25)
One approach to exploring the behavior of microbial cultures during transient conditions of unbalanced growth is to experimentally observe continuous-flow biological reactors which have been subjected to perturbations in ...
Metabolic effects of short-chain ceramide and glucosylceramide on sphingolipids and protein kinase C
(Blackwell Publishing Ltd, 1992-12)