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[PG/LT system and inflammation].
Nihon Rinsho
November 2012
Department of Pharmacology, Asahikawa Medical University.
Malnutrition promotes prostaglandin over leukotriene production and dysregulates eicosanoid-cytokine crosstalk in activated resident macrophages.
Prostaglandins Leukot Essent Fatty Acids
July 2009
Research Service, Audie L. Murphy Memorial Veterans Hospital, South Texas Veterans Health Care System, USA.
We previously described a murine model of malnutrition that mimicked features of moderate human malnutrition, and led to increased dissemination of Leishmania donovani. In this study, we investigated the effect of malnutrition on macrophage production of cytokines, prostaglandins (PGs), and leukotrienes (LTs). Using either LPS or calcium ionophore A23187 as a stimulus, macrophages from the malnourished mice produced a 3-fold higher PG/LT ((PGE(2)+6-keto-PGF(1alpha))/(LTB(4)+cysteinyl leukotrienes)) ratio than macrophages from well-nourished mice.
View Article and Find Full Text PDFThe potential relationship of an intact membrane organization to the synthesis of chondroitin was examined before and after modification of a chick-embryo cartilage microsomal system with the non-ionic detergent Triton X-100. Incubations with labelled UDP-GlcA and UDP-GalNAc indicated that Triton X-100 had little effect on the amount of chondroitin synthesized to form one species of large proteochondroitin (Type I). However, Triton X-100 had a marked stimulatory effect on the formation of another smaller species of proteochondroitin (Type II).
View Article and Find Full Text PDFModulation of resynthesis of 1-alkyl-2-arachidonyl-glycero-3-phosphocholine and phosphatidylinositols for interception in vivo of free arachidonic acid, lyso-PAF, diacyl-glycerols, and phosphoinositides.
Prog Clin Biol Res
October 1989
Chirug. Klinik Innenstadt, München.
Thermal injury causes directly a liberation of inositolphosphates, diacylglycerols, free arachidonic acid, and lyso PAF from eukaryotic cells. From lyso PAF derivates PAF, from free arachidonic acid are derivating PG, LT, and TX. These "soluble mediators" are stimulating inflammatory cell populations in a feedback mechanism: the stimulus activates the inflammatory cells to produce the same soluble mediators (Fig.
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