Sökning: "Photoreceptors"

Visar resultat 6 - 10 av 47 avhandlingar innehållade ordet Photoreceptors.

  1. 6. Biochemical and biomechanical modulation of the in vitro retina

    Författare :Linnéa Taylor; Lund Oftalmologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Retina; in vitro; modulation; biomechanics; glutamate; GDNF; stretch; Müller cells; Photoreceptors; gliosis;

    Sammanfattning : The porcine retinal explant culture paradigm offers the possibility to study retinal health, disease and development independently from the surrounding tissues of the eye. Retina-intrinsic effects of molecular and mechanical cues on the isolated retinal sheet can thus be studied with great precision. LÄS MER

  3. 7. Structural and functional alterations in the rat retina after long term exposure to two n-hexane metabolites

    Författare :Birgitta Bäckström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :n-Hexane; 2; 5-hexanedione; 2; 5-hexanediol; immunohistochemical techniques; neurotoxicity; retinopathy; photoreceptors; light energy; electrophysiology; pupil;

    Sammanfattning : Exposure to the two n-hexane metabolites, 2,5-hexanedione (2,5-HD) and 2,5-hexanediol (2,5-HDol) causes swellings in the distal part of long nerve axons. This phenomenon, centralperipheral distal axonopathy, was studied using an indirect immuno-peroxidase method with monoclonal antibodies to neurofilament protein. LÄS MER

  4. 8. Development of photoreceptor organs in teleosts, Molecular and immunocytochemical studies

    Författare :Johan Forsell; Tumörmikromiljö; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fish; opsin; extraretinal; retina; Development; pineal organ; Zoology; Zoologi;

    Sammanfattning : Many vertebrate animals are known to have multiple sites for photoreception that are not involved in vision. Extraretinal photoreception is indicated to play a crucial role in early development, physiology and behavior, as well as in later biological processes. LÄS MER

  5. 9. Ommatidial adaptations for vision in nocturnal insects

    Författare :Rikard Frederiksen; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gain of transduction; Information rate; Signal-to-noise ratio; Apposition eye; Optical sensitivity; Nocturnal insects; Superposition eye; Vision;

    Sammanfattning : Nocturnal vision is a demanding task for insects with small eyes. As it gets dimmer the noise imposed by the stochastic nature of photon arrival makes vision unreliable. Despite this, there are quite a number of animal species that are active at night and apparently see well. LÄS MER

  7. 10. Experimental transplantation of retinal and iris pigment epithelial cells into the subretinal space

    Författare :Sven Crafoord; Jan Ulrik Prause; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : A dysfunction of the retinal pigment epithelium (RPE) is the main cause for the development of age-related macular degeneration (ARMD) and visual loss in elderly people. For about 10 years experimental and clinical attempts to transplant RPE cells have been performed. LÄS MER