Sökning: "Dick Nässel"

Visar resultat 6 - 10 av 10 avhandlingar innehållade orden Dick Nässel.

  1. 6. Chemical circuitry in the visual system of the fruitfly, Drosophila melanogaster

    Författare :Agata Kolodziejczyk; Dick Nässel; Axel Borst; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optic lobe; lamina; neurotransmitters; neuropeptides; tangential neurons; Animal physiology; Zoofysiologi; funktionell zoomorfologi; Functional Zoomorphology;

    Sammanfattning : Signal processing in the visual system is mediated by classic neurotransmission and neuropeptidergic modulatory pathways. In Dipteran insects, especially in the fruitfly Drosophila melanogaster, the morphology of the visual system is very well described. LÄS MER

  3. 7. The role of insulin signaling during development, reproductive diapause and aging in Drosophila Melanogaster

    Författare :Sifang Liao; Dick Nässel; Heinrich Dircksen; Mark Brown; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; insulin-like peptides; reproductive diapause; behavioral senescence; neuromodulator; lifespan; funktionell zoomorfologi; Functional Zoomorphology;

    Sammanfattning : The insulin/insulin-like growth factor signaling pathway exists from invertebrates to vertebrates and it can regulate various biological processes, including development, metabolism, stress resistance and lifespan. In Drosophila, eight insulin-like peptides (DILP1-8) have been found. LÄS MER

  4. 8. Morphological and functional effects of insulin signaling and the bHLH transcription factor Dimmed on different neuron types in Drosophila

    Författare :Yiting Liu; Dick R. Nässel; Irene Miguel-Aliaga; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; insulin signaling; Dimm; neuropeptide; insulin receptor; insulin-like peptide; drosophila; funktionell zoomorfologi; Functional Zoomorphology;

    Sammanfattning : In Drosophila, the insulin signaling pathway is at the interface between dietary conditions and control of growth and development, reproduction, stress responses and life span. Eight insulin like peptides (Dilp1-8), an insulin tyrosine kinase receptor (dInR) and its downstream components, as well as a relaxin-like receptor type (Lgr3) form the core of this signaling. LÄS MER

  5. 9. Regulation of insulin signaling and its developmental and functional roles on peptidergic neurons in the Drosophila central nervous system

    Författare :Jiangnan Luo; Dick Nässel; Susan Broughton; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Insulin; serotonin; octopamine; insulin receptor; Dimm; neuropeptide; funktionell zoomorfologi; Functional Zoomorphology;

    Sammanfattning : In Drosophila, eight insulin-like peptides (DILP1-8) are produced and secreted in different locations. They regulate many aspects of development and physiology, such as organism growth, metabolic homeostasis, reproduction, stress resistance and life span. LÄS MER

  7. 10. Neuropeptides and GABA in control of insulin producing cells in Drosophila

    Författare :Jeannette Söderberg; Åsa Winther; Dick R. Nässel; Susan Broughton; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Drosophila; insulin signaling; metabolism; feeding; DTK; DSK; GABA; stress resistance; funktionell zoomorfologi; Functional Zoomorphology;

    Sammanfattning : Insulin plays an important role in metabolic regulation as well as in growth, fecundity and stress resistance. In order to understand more about the regulation of insulin-like peptide (DILP) production and release we investigate the impact of neuropeptide (DTK) signaling and classical neurotransmitter (GABA) signaling onto the insulin producing cells of the Drosophila brain. LÄS MER