Sökning: "Cellular transport"

Visar resultat 16 - 20 av 298 avhandlingar innehållade orden Cellular transport.

  1. 16. Functional aspects of inorganic phosphate transport

    Författare :Michael R. Andersson; Bengt Persson; Jan Willem de Gier; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phosphate membrane transport mutagenesis saccharomyces cerevisae; Biokemi; Biochemistry;

    Sammanfattning : Inorganic phosphate is an essential nutrient for all organisms. It is required for many cellular components as nucleic acids and phospholipids, and as energy-carrying compounds such as ATP. Thus, a regulated uptake of this pivotal nutrient is of outermost importance. LÄS MER

  3. 17. Studies of Cellular Regulatory Mechanisms : from Genetic Switches to Cell Migration

    Författare :Maria Werner; Erik Aurell; Ulrich Gerland; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plasma physics; Plasmafysik;

    Sammanfattning : Cellular behaviour depends ultimately on the transcription of genes. If we know how transcription is controlled we have a better chance of understanding cellular processes. This thesis presents six studies, all concerning cellular regulatory mechanisms. One study is purely experimental and five are computational studies. LÄS MER

  4. 18. Mathematical Models in Cellular Biophysics

    Författare :Jacob Kowalewski; Hjalmar Brismar; Erik Fransén; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Calcium oscillations; Diffusion; Dopamine receptors; Mathematical models; Computer simulations; FRAP; Physics; Fysik;

    Sammanfattning : Cellular biophysics deals with, among other things, transport processes within cells. This thesis presents two studies where mathematical models have been used to explain how two of these processes occur. Cellular membranes separate cells from their exterior environment and also divide a cell into several subcellular regions. LÄS MER

  5. 19. β-N-methylamino-L-alanine (BMAA)-induced neurotoxicity : Studies in vitro and in vivo

    Författare :Lisa Ersson; Malin Andersson; Eva B Brittebo; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; BMAA; neurotoxin; neurodegeneration; cellular transport; metabolic profiling; protein-association; Farmaceutisk vetenskap; Pharmaceutical Science;

    Sammanfattning : β-N-methylamino-L-alanine (BMAA) is a neurotoxic non-proteinogenic amino acid produced naturally by cyanobacteria, diatoms and dinoflagellates and it has been detected in samples from fresh and marine water from all over the world. It can bioaccumulate in fish and shellfish, and has a potential to biomagnify in a terrestrial food chain. LÄS MER

  7. 20. Motility of human polymorphonuclear leukocytes : An image processing approach

    Författare :Mikael Gustafsson; Erik Gylfe; Linköpings universitet; []
    Nyckelord :Human polymorphonuclear leukocytes; locomotion; phagocytosis; Saccharomyces cerevisiae; membrane transport; intracellular free calcium; cellular pH; water influx; actin dynamics; digital video microscopy; image processing; fura-2; BCECF; DII; MEDICINE; MEDICIN;

    Sammanfattning : Cell motility is essential for polymorphonuclear leukocyte (PMN) function in the defense against invading microorganisms and in inflammatory processes. Using digital video microscopy and image processing, individual cells were studied during random locomotion, chemotactic locomotion and phagocytosis. LÄS MER