Sökning: "Maria Fällman"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden Maria Fällman.

  1. 1. Complement receptor-mediated signal transduction in human neutrophils : A role for protein kinase C in the phagocytic process

    Författare :Maria Fällman; Claes B. Wollheim; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : The neutrophil granulocyte comprises the first line of human defense against invading microorganisms. A versatile motile machinery enables the cell to migrate to the inflammatory site and there engulf and destroy the pathogens by phagocytosis. LÄS MER

  2. 2. Persistent infection by Yersinia pseudotuberculosis

    Författare :Kemal Avican; Maria Fällman; Wyndham W. Lathem; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Persistent infection; RNA-seq; PMNs; Yersinia; Transcriptome; wrba; fnr; rovA; arcA; rfaH; molekylärbiologi; Molecular Biology; Infectious Diseases; infektionssjukdomar; immunologi; Immunology;

    Sammanfattning : Enteropathogenic Yersinia species can infect many mammalian organs such as the small intestine, cecum, Peyer’s patches, liver, spleen, and lung and cause diseases that resemble a typhoid-like syndrome, as seen for other enteropathogens. We found that sublethal infection doses of Y. LÄS MER

  3. 3. Timing and targeting of Type III secretion translocation of virulence effectors in Yersinia

    Författare :Sofie Ekestubbe; Åke Forsberg; Roland Rosqvist; Maria Fällman; Kurt Schesser; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Type III secretion system; virulence; translocation; Yersinia pseudotuberculosis; LcrV; YopN; effector targeting; phagocytosis inhibition; YopH; in vivo infection;

    Sammanfattning : The Type III secretion system (T3SS) is an important virulence mechanism that allows pathogenic bacteria to translocate virulence effectors directly into the cytoplasm of eukaryotic host cells to manipulate the host cells in favor of the pathogen. Enteropathogenic Yersinia pseudotuberculosis use a T3SS to translocate effectors, Yops, that prevent phagocytosis by immune cells, and is largely dependent on it to establish and sustain an infection in the lymphoid tissues of a mammalian host. LÄS MER

  4. 4. Coordinating type III secretion system biogenesis in Yersinia pseudotuberculosis

    Författare :Jyoti Mohan Gurung; Matthew S Francis; Maria Fällman; Dirk Linke; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; NATURVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; NATURAL SCIENCES; MEDICAL AND HEALTH SCIENCES; Yersinia pseudotuberculosis; type III secretion system; YscX; YscY; YopN; TyeA; secretion signal; N-terminal region; site-directed mutagenesis; molekylärbiologi; Molecular Biology; mikrobiologi; Microbiology;

    Sammanfattning : Various Gram-negative bacteria utilize type III secretion system (T3SS) to deliver effectors into eukaryotic host cells and establish mutualistic or pathogenic interactions. An example is the Ysc-Yop T3SS of pathogenic Yersinia species. LÄS MER

  5. 5. Effects of invasin and YopH of Yersinia pseudotuberculosis on host cell signaling

    Författare :Anna Gustavsson; Maria Fällman; Arnoud Sonnenberg; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; β1-integrin; Yersinia pseudotuberculosis; Invasin; YopH; Cell-Matrix Adhesion; Filopodia; Cell Spreading; Molekylärbiologi; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Sammanfattning : Integrins are a large family of membrane-spanning heterodimeric (αβ) receptors that bind to ligands on other cells or to extracellular matrix (ECM) proteins. These receptors mediate bidirectional signaling over the cell membrane to induce signaling cascades mediating functions as cell adhesion, spreading and migration. LÄS MER