Sökning: "intracellular free Ca2"

Visar resultat 6 - 10 av 40 avhandlingar innehållade orden intracellular free Ca2.

  1. 6. The involvement of calcium and membrane fusion events in neutrophil secretion and respiratory burst

    Författare :Daniel Granfeldt; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neutrophils; calcium; regulated secretion; membrane fusion; SOC; arachidonic acid; intracellular fusion; oxygen free radicals; phagocytosis;

    Sammanfattning : Neutrophil granulocytes play an important role in host defence during the early stages of microbial infection. The neutrophils have to leave the blood stream and migrate out into the tissue where they are able to phagocytose and kill microbes as well as dispose of cell debris from damaged tissues. LÄS MER

  3. 7. Regulation of Intracellular Calcium in Brown Adipocytes

    Författare :Shi-Jin Zhang; Lawrence C.H Wang; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; zoofysiologi; Zoological physiology;

    Sammanfattning : Intracellular Ca2+ is considered a primary regulator of cell function. In the present study, the control and the effects of intracellular Ca2+ in brown adipocytes have been investigated. Cytosolic Ca2+ levels ([Ca2+]i) are the resultant of the activity of Ca2+ transport systems. LÄS MER

  4. 8. Zinc Oxide Nanostructure Based Electrochemical Sensors and Drug Delivery to Intracellular Environments

    Författare :Muhammad Asif; Magnus Willander; Omer Nour; Sunil Bhand; Linköpings universitet; []
    Nyckelord :ZnO nanorods; Intracellular electrochemical sensor; Functionalization; Metal ions; Glucose; Human Adipocytes; Frog Oocytes; Airway surface liquid; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : The nanoscale science and nanostructure engineering have well established in the fabrication of novel electrochemical biosensors with faster response and higher sensitivity than of planar sensor configurations. Moreover nanostructures are suggested and used as efficient carrier of photosensitizers for cancerous cell treatment. LÄS MER

  5. 9. 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

  7. 10. Modulation of the calcium-force relationship in smooth muscle by polyamines and metabolic inhibition

    Författare :Karl Swärd; Cellulär biomekanik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; metabolic inhibition; polyamines; excitation-contraction coupling; smooth muscle; intracellular calcium; Physiology; Fysiologi;

    Sammanfattning : The relationship between intracellular free calcium ([Ca2+]i) and force in smooth muscle was investigated in receptor-coupled permeabilized preparations and by fluorimetry of the calcium indicator Fura 2 in intact smooth muscle. The time integral of spontaneous [Ca2+]i transients in the intact rat portal vein was decreased by cyanide and, during tonic contraction, cyanide reduced force without changing [Ca2+]i implying metabolic sensitivity of both membrane excitation and [Ca2+]i - activation of the contractile proteins. LÄS MER