Sökning: "cell membrane damage"

Visar resultat 16 - 20 av 123 avhandlingar innehållade orden cell membrane damage.

  1. 16. General stress proteins: Novel function and signals for induction of stationary phase genes in E.coli

    Författare :Örjan Persson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; general stress response; universal stress protein; sigma S; DNA damage; fructose-6-phosphate; ruvC;

    Sammanfattning : Survival during conditions when nutrients become scarce requires adaptation and expression of genes for maintenance in order for the cell to survive. Among the numerous proteins involved in adaptation and regulation under these conditions, the stationary phase sigma factor, σS, and the Universal stress proteins contribute to survival and bestow the cell with general stress protective functions during growth arrest. LÄS MER

  3. 17. The involvement of calcium and membrane fusion events in neutrophil secretion and respiratory burst

    Författare :Daniel Granfeldt; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neutrophils; calcium; regulated secretion; membrane fusion; SOC; arachidonic acid; intracellular fusion; oxygen free radicals; phagocytosis;

    Sammanfattning : Neutrophil granulocytes play an important role in host defence during the early stages of microbial infection. The neutrophils have to leave the blood stream and migrate out into the tissue where they are able to phagocytose and kill microbes as well as dispose of cell debris from damaged tissues. LÄS MER

  4. 18. B cell regulation in autoimmune disease

    Författare :Shan Wang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Our immune system protects us from both foreign antigens and self-derived autoantigens by sophisticated regulation. During an immune response, the innate and adaptive parts of the immune system closely collaborate at every stage of the response. LÄS MER

  5. 19. Development of quantitative optical microscopy methods for single cell analysis

    Författare :Katarina Logg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; protein localization; quantitative optical microscopy; live cell imaging; image analysis; cellular stress;

    Sammanfattning : Optical microscopy has brought powerful methods to biological research, in particular the possibility to assay dynamic molecular processes within living individual cells. This thesis deals with various aspects of fluorescence and Raman microscopy, such as the possibility of avoiding cellular damage or stress caused by illumination, how to manipulate single cells for spectroscopic analysis and how to quantify images automatically. LÄS MER

  7. 20. Healing of tympanic membrane perforations : an experimental study

    Författare :Anisur Rahman; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Embryonic stem cells; Healing; Immunosuppressive; Laser; Mesenchymal stem cells; Moiré interferometry; Myringotomy; Perforation; Tympanic membrane;

    Sammanfattning : Most acute tympanic membrane perforations heal spontaneously without any residual complication, whereas a fraction transforms into a chronic perforation. The current treatment of a chronic perforation is surgical repair, which is a costly, time consuming and uncomfortable procedure particularly for the pediatric patients. LÄS MER