Sökning: "Calcium"

Visar resultat 6 - 10 av 1072 avhandlingar innehållade ordet Calcium.

  1. 6. Calcium channel activity and force regulation in smooth muscle: Effects of polyamines and growth stimulation

    Författare :Maria Gomez; Kardiovaskulär forskning - immunitet och ateroskleros; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; verapamil; tissue culture; portal vein; patch-clamp; calcium; spermidine; spermine; polyamines; excitation-contraction; smooth muscle; calcium channel; ionomycin.; Physiology; Fysiologi;

    Sammanfattning : The initial signal for contraction in smooth muscle is an increase in [Ca2+]i. Ca2+ ions can either enter the cytosol from the extracellular medium or be released from intracellular stores. Voltage-operated Ca2+ channels (VOC) play a dominant role in the activation of smooth muscle contraction. LÄS MER

  3. 7. Calcium transporting ATPases in plant cells

    Författare :Malin Olbe; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Triticum aestivum; calcium; Brij 58; calmodulin; Ca2 signalling; inside-out; endoplasmic reticulum; plant; plasma membrane; proteolysis; P-type ATPase; spinach; Spinacea oleracea; trypsin; two-phase; wheat.; Plant biochemistry; Växtbiokemi;

    Sammanfattning : Plant cells carry Ca2+ ATPases to maintain the low resting level of cytosolic Ca2+ (0.1-0.2 µM) found in all eukaryotes. Plant Ca2+ ATPases are mainly located in the plasma membrane, the endoplasmic reticulum and in the vacuolar membrane, and consequently large Ca2+ gradients are created across these membranes. LÄS MER

  4. 8. Calcium-induced mitochondrial permeability transition in CNS-derived mitochondria - Pharmacological aspects of specificity and toxicity in neuroprotection

    Författare :Roland Månsson; Sektion IV; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cyclosporin A; mitochondria; brain; calcium; respiration; cell death; permeability transition; calcium retention; minocycline; neuroprotection; Debio 025;

    Sammanfattning : Mitochondria are the main site for energy conversion in the cell. Under certain circumstances, such as excess calcium retention or production of reactive oxygen species, a pore forms at contact sites between the outer and the normally impermeable inner mitochondrial membrane. LÄS MER

  5. 9. Calcium-Aluminate as Biomaterial : Synthesis, Design and Evaluation

    Författare :Jesper Lööf; Håkan Engqvist; Sture Hogmark; Elis Carlström; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Calcium-aluminate; Biomaterial; Dental materials; Vertebroplasty; Chemically Bonded Ceramics; Synthesis; Biomaterials; Biomaterial;

    Sammanfattning : In this thesis different aspects of calcium-aluminate (CA) as biomaterial are presented. Calcium aluminate is a chemically bonded ceramic with inherent properties making it suitable for use as biomaterial in some applications. LÄS MER

  7. 10. Calcium metabolism and cytokines in critical illness

    Författare :Fredrik Carlstedt; Uppsala universitet; []
    Nyckelord :Medical sciences; calcium; critical illness; hemodynamics; hypocalcemia; IL-6; mortality; TNF-alpha; severity of disease; sepsis; MEDICIN OCH VÅRD; MEDICINE; MEDICIN; Medicine; medicin;

    Sammanfattning : Hypocalcemia is a common finding in critically ill patients, particularly in those with sepsis, and has been found to be associated with increased mortality. The pathogenesis of this altered calcium metabolism is unknown and the effects of calcium supplementation are poorly investigated. LÄS MER