Sökning: "ion regulation"

Visar resultat 11 - 15 av 132 avhandlingar innehållade orden ion regulation.

  1. 11. Regulation of ion transport in the gastrointestinal tract : aspects of early development

    Författare :Lena Grahnquist; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Gastrointestinal transport; early development; ontogeny; ion; sodium; potassium; H ; K -ATPase; Na - K - 2Cl- cotransporter; barium-sensitive potassium channels; Na ; K -; ATPase; dopamine; angiotensin II; glucocorticoids; rat; human;

    Sammanfattning : Ion transport in the gastrointestinal tract is vital for cellular homeostasis and to ensure growth during ontogeny. We have therefore investigated the regulation and maturation of sodium, potassium and hydrogen transport in the gastrointestinal tract. Net jejunal sodium absorption is significantly higher in young as compared to adult rats. LÄS MER

  3. 12. Mathematical Modelling of Cerebral Metabolism : From Ion Channels to Metabolic Fluxes

    Författare :Nicolas Sundqvist; Gunnar Cedersund; Maria Engström; Roland Nilsson; Sebastian Sten; João Duarte; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The brain is the most metabolically active organ in the human body and therefore rely on a continuous supply of oxygen and glucose. Neuronal stimulation in specific regions of the leads to the firing of action potentials, a process facilitated by voltage-gated ion channels in the neurons’ cell membranes. LÄS MER

  4. 13. Peripheral Regulation of Pain and Itch

    Författare :Elín Ingibjörg Magnúsdóttir; Malin C. Lagerström; George H. Caughey; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pain; itch; CGRP; TRPV1; mast cell; mast cell protease; mMCP4; mMCP6; CPA3; endothelin-1; compound 48 80; MRGPRX2; single-stranded oligonucleotide;

    Sammanfattning : Pain and itch are diverse sensory modalities, transmitted by the somatosensory nervous system. Stimuli such as heat, cold, mechanical pain and itch can be transmitted by different neuronal populations, which show considerable overlap with regards to sensory activation. LÄS MER

  5. 14. Thermo- and chemosensitive properties of Transient Receptor Potential Ankyrin 1 ion channels

    Författare :Lavanya Moparthi; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TRP ion channels; TRPA1; ankyrin repeat domain; thermosensation; chemosensation; cold sensor; electrophiles; non-electrophiles; planar lipid bilayers; patch-clamp; fluorescence spectroscopy; mass spectrometry;

    Sammanfattning : The ability to sense and accommodate to an ever-changing environment is crucial for the survival of living organisms. Transient Receptor Potential (TRP) ion channels comprise a large superfamily of cation conducting membrane proteins that function as molecular sensors in diverse sensory processes including perception of light, taste, smell, sound, touch and temperature. LÄS MER

  7. 15. Ion homeostasis in control of stem cell proliferation

    Författare :Shaimaa Abdelhady; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The ion homeostasis is critically maintained in all cells by a combined effort from various ion channels, transporters, pumps, and gap junctions. Ion fluxes are essential in excitable cells as they regulate the excitability of the cells and initiate and propagate action potentials. LÄS MER