Sökning: "UVB irradiation"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden UVB irradiation.

  1. 1. Future stratospheric ozone depletion will affect a subarctic dwarf shrub ecosystem

    Författare :Ulf Johanson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vaccinium; UVB; subarctic; shoot growth; ozone depletion; leaf thickness; irradiation system; heath ecosystem; Empetrum; dwarf shrubs; Calamagrostis; decomposition; Physiological biophysics; Växtfysiologi;

    Sammanfattning : The stratospheric ozone depletion and the concomitant increase in ultraviolet-B (UV-B, 280-320 nm) radiation is of global concern due to the effects of UV-B on living organisms. To investigate the effects of increased levels of UV-B, a field irradiation system was established at a subarctic dwarf shrub heath in Northern Sweden (68 °N). LÄS MER

  3. 2. Towards a Translational Pain Model - Techniques and developments

    Författare :Leila Etemadi; Neuronano Research Center (NRC); []
    Nyckelord :UVB irradiation; Pain; Neuropeptides; Inflammation; Contralateral; Lateral spinal nucleus; Micro-array electrodes; Pan-neuronal markers; immunohistochemistry;

    Sammanfattning : Pain is a major health issue for each affected individual and has a large impact on health costs. Most of our knowledge about this defensive system rely on data from different animal experiments. There is an obvious need for a translational pain model allowing comparisons between experimental animals and humans. LÄS MER

  4. 3. Photosensitivity in cutaneous lupus erythematosus clinical and experimental studies

    Författare :Filippa Nyberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Lupus Erythematosus; skin; photosensitivity; polymorphous light eruption PLE ; adhesion molecules; ICAM-1; VCAM-1; E-selectin; fibroblasts; cytokines; UV light; UVA; UVB;

    Sammanfattning : Lupus erythematosus (LE) is an autoimmune disease in which the skin is one of the main target organs. Photosensitivity is a common feature for the different subtypes of cutaneous LE, but photosensitivity has not been well defined. LÄS MER

  5. 4. UVA/B induced redox alterations and apoptosis in human melanocytes

    Författare :Petra Wäster Larsson; Inger Rosdahl; Karin Öllinger; Ian Cotgreave; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; UV; melanocyte; apoptosis; glutathione; p53; Dermatology and venerology; Dermatologi och venerologi;

    Sammanfattning : Malignant melanoma is one of the most rapidly increasing cancers and accounts for about three-quarter of all skin cancer deaths worldwide. Despite compelling evidence that ultraviolet (UV) irradiation causes melanoma the knowledge how various wavelength spectra affect the balance between proliferation and apoptosis controlling the homeostasis of the melanocyte population is still limited. LÄS MER

  7. 5. Dynamics and gene expression of growth factor receptors in human cultured skin cells : Effects of UV radiation and calcium on EGF- and PDGF-receptors

    Författare :Margareta Lirvall; Gunnar Kratz; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Growth factors transmit biological signals for the stimulation of cell growth and their stimulation may be involved in turnourigenesis. It is therefore of great importance to understand growth factor receptor reactions in response to stimuli such as calcium depletion or ultraviolet radiation, which normal human cells are invariably exposed to during their growth cycle. LÄS MER