Nine urinary metabolites of selegiline hydrochloride [N-methyl-N-propargyl [2-phenyl-1-methyl)ethylammonium chloride], a monoamine oxidase inhibitor, after administration to humans were identified. Their identifies were confirmed by comparison of the spectra from GC/MS of peaks with those of authentic compounds. The following metabolites and unchanged drug (selegiline) were detected in urine: (...

The role of interleukin-2 (IL-2) in immune function has been studied extensively. Cellular receptors for IL-2 (IL-2R) on lymphocytes and certain other cells have been characterized and are responsible for transmitting the cellular response to IL-2. The importance of the IL-2R " chain has been emphasized by analyses of IL-2R expression on functional T cells and natural killer (NK) cells and by i...

t, m, s)−nets were defined by Niederreiter [6], based on earlier work by Sobol’ [7], in the context of quasi-Monte Carlo methods of numerical integration. Formulated in combinatorial/coding theoretic terms a binary linear (m − k,m, s)2-net is a family of ks vectors in F2 satisfying certain linear independence conditions (s is the length, m the dimension and k the strength: certain subsets of k ...

Concentrations of interleukin-2 (IL-2) and soluble IL-2 receptor (sIL-2R) in serum and CSF samples were measured in 63 patients with multiple sclerosis (MS) to evaluate their usefulness as markers of disease activity. CSF concentrations of IL-2 and sIL-2R were significantly higher in MS relapse compared with MS patients in remission or with control subjects. These concentrations correlated with...

Here θ is a probability measure on a Polish space , Dr k k = 1 2r is a dyadic partition of (hence the use of 2r summands) satisfying θ Dr k = 1/2r and Lq 1 Lq 2 Lq 2r is an independent, identically distributed sequence of random probability measures on a Polish space such that Lq k q ∈ N satisfies the large deviation principle with a convex rate function. A number of related asymptotic results ...

Incomplete T cell antigen receptor-mediated signaling induces an unresponsive state known as anergy. Previously, we had shown that anergy can be induced in antigen-primed but not naive T cells. In this report, we found that in vitro primed T cells from IL-2R alpha-deficient mice were resistant to anergy induction in contrast to comparably treated wild-type T cells. This resistance persisted eve...

The recently cloned cytokine interleukin-15 (IL-15) shares several functional activities with IL-2 in different cell systems. Although IL-15 does not show sequence homology with IL-2, it uses components of the IL-2 receptor (IL-2R) for binding and signal transduction, namely, p75 (beta) and the p64 (gamma) chains of IL-2R. To evaluate whether IL-15 is involved in the activation of granular lymp...

Interleukin 15 (IL-15) is a novel cytokine that has recently been cloned and expressed. Whereas it has no sequence homology with IL-2, IL-15 interacts with components of the IL-2 receptor (IL-2R). In the present study we performed a functional analysis of recombinant IL-15 on phenotypically and functionally distinct populations of highly purified human natural killer (NK) cells. The CD56bright ...

BACKGROUND Flobufen (F) is an original nonsteroidal anti-inflammatory drug with one center of chirality. 4-Dihydroflobufen (DHF), compound with two chiral centers, is the main metabolite of F in microsomes and cytosol in all standard laboratory animals. This work describes the biotransformation of F enantiomers and DHF stereoisomers in isolated male guinea pig hepatocytes. Guinea pigs were chos...

Class I phosphoinositide 3-kinase (PI3K) is a lipid kinase playing key roles in many signaling pathways regulating cell survival and growth. Besides its important role in signal transduction, PI3K is also involved in actin and membrane reorganization such as protrusion, adhesion, phagocytosis and macropinocytosis. Receptor-mediated endocytosis is initiated by plasma membrane reorganization crea...