Sökning: "serotonin-precursor"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet serotonin-precursor.

  1. 1. Positron Emission Tomography in the Management of Neuroendocrine Tumors

    Författare :Håkan Örlefors; Barbro Eriksson; Mats Bergstrom; Anders Sundin; Karel Pacak; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; Neuroendocrine tumor NET ; carcinoid; endocrine pancreatic tumor EPT ; Positron Emission Tomography PET ; serotonin-precursor; 5-hydroxytrytophan 5-HTP ; Medicin; Dermatology and venerology; clinical genetics; internal medicine; Dermatologi och venerologi; klinisk genetik; invärtesmedicin; Medicin; Medicine;

    Sammanfattning : Neuroendocrine tumors (NET´s) are often characterized by overproduction of peptide hormones. In spite of pronounced clinical symptoms, the tumor lesions can be small and difficult to detect. LÄS MER

  3. 2. Studies on Premenstrual Dysphoria

    Författare :Olle Eriksson; Tord Naessén; Bo Söderpalm; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Obstetrics and gynaecology; premenstrual dysphoria; PMDD; premenstrual syndrome; estrogen challenge test; gonadotropin feedback response; LH; FSH; neuroendocrine regulation; buspirone; nefazodone; PCO; testosterone; irritability; depressed mood; bloating; visual analogue scale; VAS; 11C-5-hydroxytryptophan; positron emission tomography; right caudate nucleus; Obstetrik och kvinnosjukdomar; Obstetrics and women s diseases; Obstetrik och kvinnosjukdomar;

    Sammanfattning : Premenstrual dysphoria, so severe that it affects the lives of the women afflicted, is the condition studied in this thesis. Physiological and pharmacological mechanisms of pathogenetic relevance were investigated. LÄS MER

  4. 3. Aspects of Social Phobia

    Författare :Ína Marteinsdóttir; Jan Wåhlinder; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; Social phobia; personality disorders; personality traits; prevalence; serotonin; PET; [3 -11C]–5-HTP; Neurovetenskap; Neurology; Neurologi; Psychiatry; psykiatri;

    Sammanfattning : Social phobia is a disabling, lifelong disorder characterised by fear in social settings.The aim of the present study was to gain more knowledge about diagnostic, neurobiologic and epidemiologic aspects of social phobia. LÄS MER

  5. 4. Gut microbiota, its modifications and the gut-brain axis

    Författare :Julia Rode; Robert Jan Brummer; Julia König; Mirjana Rajilic-Stojanovic; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; gut microbiota; gut-brain axis; faecal microbiota transfer; probiotics; butyratFunctional magnetic resonance imaging; mental health; collagenous colitis;

    Sammanfattning : The human intestinal microbiota has a major impact on host physiology and might play an important role in several diseases. Therapeutic interventions aimed at modifying the gut microbiota might exert their effects locally as well as systemically, for example via the gut-brain axis, a bidirectional communication system. LÄS MER

  7. 5. Amino acid transport and receptor binding properties in neuropsychiatric disorders using the fibroblast cell model

    Författare :Jessica Johansson; Nikolaos Venizelos; Lars Oreland; Örebro universitet; []
    Nyckelord :Fibroblasts; Bipolar disorder; ADHD; Tyrosine; Tryptophan; Alanine; Transport; mAChRs; Biomedicin; Biomedicine;

    Sammanfattning : Altered transport of the catecholamines and serotonin precursor amino acids tyrosine and tryptophan, might be one explanation for the dysfunctional neurotransmission implicated in the pathophysiology of bipolar disorder and Attention Deficit/Hyperactivity Disorder (ADHD). In previous studies, an altered amino acid transport has been found in schizophrenia and autism, when using the fibroblast cell model. LÄS MER