Blar i forfatter "Oteiza, Ana"

Viser treff 1-7 av 7

    • Evaluation by metabolic profiling and in vitro autoradiography of two promising GnRH‐receptor ligands for brain SPECT imaging 

      Fjellaksel, Richard; Moldes-Anaya, Angel; Vasskog, Terje; Oteiza, Ana; Martin-Armas, Maria Montserrat; Hjelstuen, Ole Kristian; Hansen, Jørn H; Riss, Patrick; Sundset, Rune (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-18)
      The increased expression of gonadotropin releasing hormone receptor (GnRH‐R) in brain has been strongly linked to Alzheimer disease. Therefore, the development of radiolabeled imaging agents for GnRH‐R is relevant for early diagnosis of Alzheimer disease. We have recently disclosed the discovery of two promising compounds displaying nanomolar‐range affinity for the GnRH‐R. In the present study, a ...

    • First in vivo evaluation of a potential SPECT brain radiotracer for the gonadotropin releasing hormone receptor 

      Fjellaksel, Richard; Oteiza, Ana; Martin, armas maria montserrat; Riss, Patrick; Hjelstuen, Ole Kristian; Kuttner, Samuel; Hansen, Jørn H; Sundset, Rune (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-09)
      <p><i>Objectives</i>: In vivo evaluations of a gonadotropin releasing hormone-receptor single photon emission computed tomography radiotracer for non-invasive detection of gonadotropin releasing homone-receptors in brain.</p> <p><i>Results</i>: We have used a simple, robust and high-yielding procedure to radiolabel an alpha-halogenated bioactive compound with high radiochemical yield. Literature ...

    • Glioblastoma PET/MRI: kinetic investigation of [<sup>18</sup>F]rhPSMA-7.3, [<sup>18</sup>F]FET and [<sup>18</sup>F]fluciclovine in an orthotopic mouse model of cancer 

      Lindemann, Marcel; Oteiza, Ana; Martin-Armas, Montserrat; Guttormsen, Yngve; Moldes-Anaya, Angel; Berzaghi, Rodrigo; Bogsrud, Trond; Bach-Gansmo, Tore; Sundset, Rune; Kranz, Mathias (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-22)
      <b><p>Purpose</b> Glioblastoma multiforme (GBM) is the most common glioma and standard therapies can only slightly prolong the survival. Neo-vascularization is a potential target to image tumor microenvironment, as it defines its brain invasion. We investigate [<sup>18</sup>F]rhPSMA-7.3 with PET/MRI for quantitative imaging of neo-vascularization in GBM bearing mice and human tumor tissue and compare ...

    • Hepatic disposal of advanced glycation end products during maturation and aging 

      Svistounov, Dmitri; Oteiza, Ana; Zykova, Svetlana; Sørensen, Karen Kristine; McCourt, Peter Anthony; McLachlan, Andrew J; Mccuskey, Robert Scott; Smedsrød, Bård (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Aging is characterized by progressive loss of metabolic and biochemical functions and accumulation of metabolic by-products, including advanced glycation end products (AGEs), which are observed in several pathological conditions. A number of waste macromolecules, including AGEs are taken up from the circulation by endocytosis mainly into liver sinusoidal endothelial cells (LSECs) and Kupffer cells ...

    • The interplay of matrix metalloproteinase-8, transforming growth factor-β1 and vascular endothelial growth factor-C cooperatively contributes to the aggressiveness of oral tongue squamous cell carcinoma 

      Åström, Pirjo; Juurikka, Krista; Hadler-Olsen, Elin Synnøve; Svineng, Gunbjørg; Cervigne, Nilva K.; Coletta, Ricardo D.; Risteli, Juha; Kauppila, Joonas H.; Skarp, Sini; Kuttner, Samuel; Oteiza, Ana; Sutinen, Meeri; Salo, Tuula (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-03)
      Background: Matrix metalloproteinase-8 (MMP-8) has oncosuppressive properties in various cancers. We attempted to assess MMP-8 function in oral tongue squamous cell carcinoma (OTSCC).<p> <p>Methods: MMP-8 overexpressing OTSCC cells were used to study the effect of MMP-8 on proliferation, apoptosis, migration, invasion and gene and protein expression. Moreover, MMP-8 functions were assessed in the ...

    • Machine learning derived input-function in a dynamic 18F-FDG PET study of mice 

      Kuttner, Samuel; Wickstrøm, Kristoffer Knutsen; Kalda, Gustav; Dorraji, Seyed Esmaeil; Martin-Armas, Montserrat; Oteiza, Ana; Jenssen, Robert; Fenton, Kristin Andreassen; Sundset, Rune; Axelsson, Jan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-13)
      Tracer kinetic modelling, based on dynamic <sup>18</sup>F-fluorodeoxyglucose (FDG) positron emission tomography (PET) is used to quantify glucose metabolism in humans and animals. Knowledge of the arterial input-function (AIF) is required for such measurements. Our aim was to explore two non-invasive machine learning-based models, for AIF prediction in a small-animal dynamic FDG PET study. 7 tissue ...

    • Positron emission tomography and single photon emission computed tomography imaging of tertiary lymphoid structures during the development of lupus nephritis 

      Dorraji, Seyed Esmaeil; Oteiza, Ana; Kuttner, Samuel; Martin, Armas Maria Montserrat; Kanapathippillai, Premasany; Garbarino, Sara; Kalda, Gustav; Scussolini, Mara; Piana, Michele; Fenton, Kristin Andreassen (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-03)
      Lymphoid neogenesis occurs in tissues targeted by chronic inflammatory processes, such as infection and autoimmunity. In systemic lupus erythematosus (SLE), such structures develop within the kidneys of lupus-prone mice ((NZBXNZW)F1) and are observed in kidney biopsies taken from SLE patients with lupus nephritis (LN). The purpose of this prospective longitudinal animal study was to detect early ...