Sökning: "cellular activation"

Visar resultat 1 - 5 av 838 avhandlingar innehållade orden cellular activation.

  1. 1. Exploring Cellular Dynamics : From Vesicle Tethering to Cell Migration

    Författare :Parham Ashrafzadeh; Johan Kreuger; Jonas Fuxe; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; angiogenesis; cancer; cell migration; exocyst complex; exocytosis; FGD5; lipid rafts; plasma membrane; receptor trafficking; VEGFR2;

    Sammanfattning : Cells in the body communicate with each other in order to cooperate efficiently. This communication is in part achieved by regulated secretion of signaling molecules, which when released from a cell may activate receptors present at the plasma membrane of an adjacent cell. Such signals affect both cell fate and behavior. LÄS MER

  3. 2. Platelet Activation and Inhibition in Connection with Vascular Stents

    Författare :Kjeld Christensen; Rolf Larsson; Sten Husted; Uppsala universitet; []
    Nyckelord :Medicine; platelets; inhibition; activation; stents; ACS; Medicin;

    Sammanfattning : This thesis describes the Chandler loop, which makes it possible to conduct studies in vitro of molecular and cellular interactions between whole blood and stents. It was possible to monitor activation and inhibition of the cascades systems, leukocytes and platelets by combining different platelet inhibitors and heparin coating of stents. LÄS MER

  4. 3. Biophysical investigations of ribonucleotide reductase : Activation and inhibition mechanisms

    Författare :Maria Öhrström; Astrid Gräslund; Anders Hofer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biophysics; Molekylär biofysik; Biophysics; biofysik;

    Sammanfattning : Ribonucleotide reductase (RNR) is the enzyme responsible for de novo synthesis of deoxyribonucleotides, needed for both synthesis and repair of cellular DNA. The RNRs known so far are divided into three distinct classes; I, II and III. The conventional class I enzyme is composed of two separate subunits. LÄS MER

  5. 4. Lysosomal Membrane Permeabilization : A Cellular Suicide Strategy

    Författare :Ann-Charlotte Johansson; Karin Öllinger; Karin Roberg; Boris Zhivotovsky; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; apoptosis; lysosomes; lysosomal membrane permeabilization; cathepsins; Bax; Bid; mitochondria; caspases; Cell and molecular biology; Cell- och molekylärbiologi;

    Sammanfattning : In the last decade, a tremendous gain in knowledge concerning the molecular events of apoptosis signaling and execution has been achieved.The aim of this thesis was to clarify the role of lysosomal membrane permeabilization and lysosomal proteases, cathepsins, in signaling for apoptosis. LÄS MER

  7. 5. Activation of the Cellular Immune Response in Drosophila melanogaster Larvae

    Författare :Ines Anderl; Dan Hultmark; Paul Badenhorst; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Drosophila melanogaster; immunity; blood cells; hematopoiesis; flow cytometry; in vivo imaging; genetic screens; Tl10b; fat body; Toll signaling; molekylärbiologi; Molecular Biology;

    Sammanfattning : During the last 40 years, Drosophila melanogaster has become an invaluable tool in understanding innate immunity. The innate immune system of Drosophila consists of a humoral and a cellular component. While many details are known about the humoral immune system, our knowledge about the cellular immune system is comparatively small. LÄS MER