Sökning: "photoprotection"

Visar resultat 6 - 10 av 13 avhandlingar innehållade ordet photoprotection.

  1. 6. Photochemistry of Eumelanin Precursors Role of Excited State Proton Transfer for UV Photoprotection

    Författare :Alice Corani; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Time-resolved; Fluorescence spectroscopy; Excited State Proton Transfer ESPT ; Photochemistry; Eumelanin; Melanin;

    Sammanfattning : Melanin is an epidermal pigment commonly known to give darker skin coloration under sun exposure. It is also present in the hair, eyes, inner ear and brain. LÄS MER

  3. 7. Ultraviolet Radiation and Squamous Cell Carcinoma in Human Skin

    Författare :Cecilia Wassberg; Olle Larkö; Uppsala universitet; []
    Nyckelord :Medical sciences; Ultraviolet radiation; squamos cell carcinoma; incidence; sunscreens; p53; DNA damage; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Dermatology and Venerology; dermatologi och venereologi;

    Sammanfattning : Ultraviolet radiation (UVR) is a major risk factor for development of skin cancer. UVR-induced DNA damage and a dysfunctional p53 protein are important steps in the development of squamous cell carcinoman in human skin (SCC). LÄS MER

  4. 8. 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

  5. 9. Stress response in the cyanobacterium Synechocystis sp. PCC 6803

    Författare :Helder Miranda; Christiane Funk; Hans-Erik Åkerlund; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cyanobacteria; High light; heat stress; ROS; Photosynthesis; Photosystem II; Deg HtrA proteases; small CAB-like proteins; Refraction-2D™; MALDI-TOF; 2D-gel; GC-MS; PCA; OPLS-DA; EPS; S-layer; Biochemistry; Biokemi; biokemi; Biochemistry;

    Sammanfattning : Adaptation to environmental changes is important for the survival of living organisms. Under extreme abiotic conditions, organic molecules (such as lipids, proteins and nucleic acids) are prone to damage. LÄS MER

  7. 10. The chloroplast lumen : New insights into thiol redox regulation and functions of lumenal proteins

    Författare :Michael Hall; Wolfgang Schröder; Bob B. Buchanan; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Photosynthesis; thylakoid lumen; thioredoxin; pentapeptide repeat; proteomics; Biochemistry; biokemi;

    Sammanfattning : In higher plants oxygenic photosynthesis primarily takes place in the chloroplasts of leaves. Within the chloroplasts is an intricate membrane system, the thylakoid membrane, which is the site of light harvesting and photosynthetic electron transport. LÄS MER