Sökning: "Djurfysiologi"

Visar resultat 6 - 10 av 32 avhandlingar innehållade ordet Djurfysiologi.

  1. 6. Learning and memory in moths - plasticity in behaviour and neurophysiology

    Författare :Ruey-Jane Fan; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; proboscis extension reflex PER ; LTM; MTM; STM; memory; inter-trial-interval ITI ; inter-stimulus interval ISI ; US; CS; olfaction; Associative learning; classical conditioning; discrimination; the US pathway; Ecology; Ekologi; Animal physiology; Djurfysiologi;

    Sammanfattning : The moth, Spodoptera littoralis, was demonstrated to be a new model system for studying mechanisms underlying odour conditioning. In the experiments a restrained moth was trained to learn an association between a conditioned stimulus (CS) and an unconditioned stimulus (US). LÄS MER

  3. 7. Regulation of Injury Induced Schwann Cell Proliferation Schwann Cell Proliferation

    Författare :Åsa Fex Svenningsen; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; estrogen; signal transduction; insulin like growth-factors; Schwann cell; peripheral; nerve regeneration; Djurfysiologi; Animal physiology; progesterone;

    Sammanfattning : The purpose of this study was to investigate injury induced proliferation of Schwann cells with emphasis of the effects of the insulin-like growth factors (IGF-I and IGF-II) and the sex hormones progesterone and estrogen. Proliferation, measured as [3H] thymidine incorporation, was studied in cultured segments of the rat sciatic nerve or through the use of the thymidine analogue bromo- deoxy-uridine (BrdU) in combination with immunocytochemistry. LÄS MER

  4. 8. Studies on Peripheral Nerve Regeneration: Microdispensing, Neurite Guidance and Galectins

    Författare :Per Gustavsson; Funktionell zoologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; vävnadskultur; histokemi; cytokemi; Histologi; tissue culture; histochemistry; cytochemistry; Histology; Schwann cells; sciatic nerve; dorsal root ganglia; DRG; neurite guidance; galectins; inkjet; microdispensing; peripheral nervous system; nerve regeneration; Animal physiology; Djurfysiologi; Biotechnology; Bioteknik;

    Sammanfattning : The present thesis describes development of a microdispenser-based technique to create of protein patterns for neurite guidance. The same technique was also developed to allow direct positioning of dissociated cells, including neurons, on cell culture substrates. Finally the role of galectin-3 and 8 during nerve regeneration was investigated. LÄS MER

  5. 9. On the Role of Polyamines in Apoptosis

    Författare :Cecilia Hegardt; Bröstcancer-genetik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SSAT; DENSPM; spermine; polyamines; mitochondrial membrane potential; cytochrome c; caspase; flow cytometry; Jurkat cells; mouse thymocytes; thymus in vivo; programmed cell death; Dexamethasone-induced apoptosis; Fas-induced apoptosis; AdoMetDC; Cytology; oncology; cancerology; Cytologi; onkologi; cancer; Clinical biology; Klinisk biologi; Animal physiology; Djurfysiologi;

    Sammanfattning : Apoptosis is a kind of death that is best described as cellular suicide and it is important for normal tissue homeostasis. The process can be induced by a number of different stimuli and the dying cell goes through a defined pathway terminating in typical biochemical and morphological alterations of the cell. LÄS MER

  7. 10. Regulation of Polyamine Analogue-Induced Apoptosis in Human Breast Cancer Cells

    Författare :Martina Holst; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cancer; Animal physiology; Djurfysiologi; Pharmacological sciences; pharmacognosy; pharmacy; onkologi; Cytologi; cancerology; oncology; Cytochrome c; Cytology; Bcl-2; Mitochondrial respiration; Apoptosis; Human breast cancer cells; toxicology; Farmakologi; farmakognosi; farmaci; toxikologi; Social medicine; Socialmedicin; samhällsmedicin; Mitochondria; Polyamine analogues;

    Sammanfattning : Apoptosis is a defined process for cells to commit suicide through a set of biochemical and morphological cell changes. Activated apoptotic signals converge on the mitochondria, leading to permeabilization of mitochondrial membranes and release of different apoptosis regulatory proteins into the cytosol. LÄS MER