Sökning: "PtdIns 4"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden PtdIns 4.
Sammanfattning : Certain membrane lipids are involved in intracellular signalling processes, among them phosphoinositides and diacylglycerol (DAG). They mediate a variety of functions, including the effects of nutrients and neurohormonal stimuli on insulin secretion from pancreatic β-cells. LÄS MER
Sammanfattning : Phosphoinositides are of particular interest in signal transduction processes as they can be sequentially phosphorylated and used as precursors for the intracellular messengers inositol trisphosphate (InsP3) and diacylglycerol (DAG) that in turn affects calcium levels and protein kinase cascades, eventually leading to a physiological response. The activity and regulation of PtdIns 4-kinases and PtdInsP kinase was studied. LÄS MER
3. Phosphatidylinositol 4-kinases in plasma membranes and Affinity partitioning of liposomes: a model system for membrane purification
Sammanfattning : Polyphosphoinositides, the different phosphorylated variants of the phospholipid phosphatidylinositol (PtdIns), are used in a wide array of intracellular mechanisms in eukaryotic cells. The phosphorylation of PtdIns at carbon D4, catalyzed by phosphatidylinositol 4-kinase, is an important step in the synthesis of several of these molecules. LÄS MER
Sammanfattning : Atopic eczema (AE) is a chronic inflammatory skin disease characterised by pruritic (itchy) skin lesions. The pathogenic mechanisms underlying AE are still unclear, although several factors such as genetic predisposition, a dysfunctional skin barrier, exposure to environmental allergens and skin colonisation with microorganisms appear to be of importance. LÄS MER
5. Intracellular signaling of phosphorylated insitol compounds : A study in pancreatic beta-cells and hippocampal neurons
Sammanfattning : The family of phosphorylated inositol compounds consists of soluble cytosolic inositol phosphates and insoluble inositol phospholipids, localized in cellular membranes and the nuclear matrix. Although inositol phospholipids only account for 5-10% of total plasma membrane lipids, these compounds and their inositol phosphate derivatives play an important role in a broad range of cellular processes including intracellular Ca 2+ signalling, ion channel regulation, vesicle trafficking, both exo- and endocytosis, cell growth and apoptosis. LÄS MER