Sökning: "hydroxylase"

Visar resultat 11 - 15 av 160 avhandlingar innehållade ordet hydroxylase.

  1. 11. Gene therapy by enzyme replacement for Parkinson’s disease Optimization of continuous DOPA delivery and development of a candidate vector for clinical application

    Författare :Tomas Björklund; Brain Repair and Imaging in Neural Systems (BRAINS); []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; serotonin; Parkinson’s disease; L-DOPA; dyskinesia; GTP cyclohydrolase 1; tyrosine hydroxylase; dopamine; gene therapy; enzyme replacement; gene regulation; aromatic L-amino acid decarboxylase;

    Sammanfattning : The introduction of L-DOPA pharmacotherapy revolutionized the treatment of Parkinson’s disease close to fifty years ago. Before the discovery of dopamine as a neurotransmitter and its involvement in the disease, these patients had very little aid from medication and were bound to a life without movement. LÄS MER

  3. 12. Cell and Gene Therapy for Parkinson's Disease: Therapeutic Effect and Modulation of Dyskinesias in the 6-OHDA Rat Model

    Författare :Thomas Carlsson; Brain Repair and Imaging in Neural Systems (BRAINS); []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neuropsykologi; Pharmacological sciences; pharmacognosy; pharmacy; neurofysiologi; Medicin människa och djur ; Neurology; neuropsychology; neurophysiology; Neurologi; Medicine human and vertebrates ; Parkinson?s disease; Serotonin; Tyrosine hydroxylase; Ventral mesenchephalon; Motor behavior; L-DOPA; GTP cyclohydrolase 1; Gene therapy; Dyskinesias; Cell transplantation; Dopamine; toxicology; Farmakologi; farmakognosi; farmaci; toxikologi;

    Sammanfattning : The main pathological feature in Parkinson's disease is the progressive loss of dopamine neurons in the midbrain, which in turn leads to the appearance of motor deficits such as akinesia/bradykinesia (loss/slowness of movements), rigidity, postural imbalance and tremor. To this day, there is no cure for the disease, but there are medications to relieve the symptoms. LÄS MER

  4. 13. Studies on the transcriptional regulation of sterol 12alpha-hydroxylase (CYP8B1)

    Författare :Yizeng Yang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Bile acids; CYP8B1; CYP7A1; transcription; nuclear receptor; PPAR-alpha; HNF4-alpha; FTF; SREBP; thyroid hormones.;

    Sammanfattning : The conversion of cholesterol into bile acids is mainly via two pathways, which are initiated by CYP7A1 and CYP27A1 respectedly. CYP8B1, a microsomal P450 cytochrome, hydroxylates of the steroid nucleus at the C-12alpha position to form 7alpha, 12alpha-dihydroxy-4-cholesten-3-one, a facultative precursor of CA. LÄS MER

  5. 14. Cyanide and central nervous system : a study with focus on brain dopamine

    Författare :Gudrun Cassel; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CNS; cyanide; dopaminergic system; convulsions; receptor binding; tyrosine hydroxylase; monoamine oxidase; extracellular release; inositol phosphate; GABA; GAD;

    Sammanfattning : The brain is a major target site in acute cyanide intoxication, as indicated by several symptoms and signs. Cyanide inhibits the enzyme cytochrome oxidase. This inhibition causes impaired oxygen utilization in all cells affected, severe metabolic acidosis and inhibited production of energy. LÄS MER

  7. 15. Restorative and neuroprotective treatment strategies for Parkinson’s disease: tudies on fetal dopamine cell transplants and GDNF delivery by intracerebral injections and recombinant AAV vectors

    Författare :Deniz Kirik; Neurobiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; adeno-associated virus; regeneration; neuroprotection; glial-cell-line-derived-neurotrophic factor; cell death; substantia nigra; dopamine; neurofysiologi; neuropsykologi; Neurologi; neurophysiology; neuropsychology; Neurology; tyrosine hydroxylase; sensorimotor behavior; transplantation; gene therapy;

    Sammanfattning : The intrastriatal 6-hydroxydopamine lesion model in rats is particularly useful in studies testing new therapeutic strategies for Parkinson’s disease. This thesis work (1) describes the characterization of the motor deficits after different types of intrastriatal lesions and identifies the four-site terminal lesion as a model of symptomatic Parkinson’s disease; (2) using the same model, provides evidence that the functional impact of the dopamine cell grafts are dependent on interactions with the host brain; (3) demonstrates that protection or restitution of normal motor function after 6-hydroxydopamine lesions can be achieved if glial cell line-derived neurotrophic factor is administered in the striatum at the time of the terminal fiber degeneration. LÄS MER