Sökning: "membrane specializations"

Hittade 3 avhandlingar innehållade orden membrane specializations.

  1. 1. The Human Spiral Ganglion

    Författare :Sven Tylstedt; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Otorhinolaryngology; human spiral ganglion; ultrastructural morphology; neural interaction; synaptophysin; connexin; membrane specializations; synapse; gap junction; tight junction; Otorhinolaryngologi; Otorhinolaryngology; Otorhinolaryngologi; Oto-Rhino-Laryngology; oto-rhino-laryngologi;

    Sammanfattning : Our knowledge of the fine structure of the Human Spiral Ganglion (HSG) is still inadequate and new treatment techniques for deafness using electric stimulation, call for further information and studies on the neuronal elements of the human cochlea. This thesis presents results of analyses of human cochlear tissue and specimens obtained during neurosurgical transpetrosal removal of life-threatening meningeomas. LÄS MER

  3. 2. On amino acid neurotransmitters in the spinal cord motor nuclei

    Författare :Göran Örnung; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :neurotransmitter; aspartate; glutamate; GABA. glycine; homocysteate; taurine; ultrastructure; freeze-substitution; immunocytochemistry; bouton; synaptic input; motoneuron; strech reflex; spinal cord; cat. rat;

    Sammanfattning : Using pre- and post-embedding immunocytochemistry, the distribution of six amino acid neurotransmitter candidates, with special reference to y-amino-butyric acid (GABA), glycine and glutamate was examined in boutons apposing somata and dendrites in the lumbar motor nuclei of the cat spinal cord. The monosynaptic connection between muscle spindle I a afferents and motoneurons regarding content of neuroactive amino acid and complement of amino acid receptors in the postsynaptic membrane was studied in the rat. LÄS MER

  4. 3. Biological roles of laminins 8, 9 and 10

    Författare :Jill Thyboll; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : In order to form multicellular organisms, cells need attachment, either directly to each other through cell-cell interactions, or indirectly via a complex mixture of macro-molecules called the extracellular matrix. Basement membranes are specialized forms of this matrix. LÄS MER