Now showing items 1021-1040 of 1974

    • Quantitative PET/MR imaging of lung cancer in the presence of artifacts in the MR-based attenuation correction maps 

      Kuttner, Samuel; Lassen, Martin Lyngby; Øen, Silje Kjærnes; Sundset, Rune; Beyer, Thomas; Eikenes, Live (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-13)
      <i>Background</i> - Positron emission tomography (PET)/magnetic resonance (MR) imaging may become increasingly important for assessing tumor therapy response. A prerequisite for quantitative PET/MR imaging is reliable and repeatable MR-based attenuation correction (AC).<p> <p><i>Purpose</i> - To investigate the frequency and test–retest reproducibility of artifacts in MR-AC maps in a lung cancer ...
    • Polymorphisms in the vitamin D system and mortality - The Tromsø study 

      Jorde, Rolf; Wilsgaard, Tom; Grimnes, Guri (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-18)
      Vitamin D deficiency is associated with diabetes, cancer, immunological and cardiovascular diseases as well as increased mortality. It has, however, been difficult to show a causal relation in randomized, controlled trials. Mendelian randomization studies provide another option for testing causality, and results indicate relations between the serum 25-hydroxyvitamin D (25(OH)D) level and some diseases, ...
    • Facet arthropathy evaluation: CT or MRI? 

      Berg, Linda; Thoresen, Hanne; Neckelmann, Gesche F; Furunes, Håvard; Hellum, Christian; Espeland, Ansgar (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-22)
      <i>Objective</i> - To assess the reliability of lumbar facet arthropathy evaluation with computed tomography (CT) or magnetic resonance imaging (MRI) in patients with and without lumbar disc prosthesis and to estimate the reliability for individual CT and MRI findings indicating facet arthropathy.<p> <p><i>Methods</i> - Metal-artifact reducing CT and MRI protocols were performed at follow-up of ...
    • Prediction of recurrent venous thrombosis in all patients with a first venous thrombotic event: The Leiden Thrombosis Recurrence Risk Prediction model (L-TRRiP) 

      Timp, Jasmijn F.; Brækkan, Sigrid Kufaas; Lijfering, Willem M.; van Hylckama Vlieg, Astrid; Hansen, John-Bjarne; Rosendaal, Frits Richard; le Cessie, Saskia; Cannegieter, Suzanne C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-11)
      <i>Background</i> - Recurrent venous thromboembolism (VTE) is common. Current guidelines suggest that patients with unprovoked VTE should continue anticoagulants unless they have a high bleeding risk, whereas all others can stop. Prediction models may refine this dichotomous distinction, but existing models apply only to patients with unprovoked first thrombosis. We aimed to develop a prediction ...
    • The effect of maternal and paternal height and weight on antenatal, perinatal and postnatal morphology in sex-stratified analyses 

      Skåren, Lise Hansen; Davies, Braidy; Bjørnerem, Åshild (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-10)
      <i>Introduction</i> - Low birthweight is associated with diseases later in life. The mechanisms for these associations are not well known. If the hypothesis concerning “maternal constraint” is correct for humans, as shown in animal experiments, we expect the maternal, not paternal, body proportions to influence antenatal growth and those of both parents to influence postnatal growth. We aimed to ...
    • Effect of the baseline Y93H resistance-associated substitution in HCV genotype 3 for direct-acting antiviral treatment: real-life experience from a multicenter study in Sweden and Norway 

      Kjellin, Midori; Kileng, Hege; Akaberi, Dario; Palanisamy, Navaneethan; Duberg, Ann-Sofi; Danielsson, Astrid; Kristiansen, Magnhild Gangsøy; Nöjd, Johan Edvin; Aleman, Soo; Gutteberg, Tore Jarl; Goll, Rasmus; Lannergård, Anders; Lennerstrand, Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-19)
      <i>Background</i>: The NS5A resistance-associated substitution (RAS) Y93H is found quite frequently (5–10%) at baseline in direct-acting antiviral agents (DAA) treatment-naïve genotype (GT) 3a patients when studied by the population-sequencing method (cut-off 20%). This RAS may impair HCV DAA treatment response, since it possesses a high fold <i>in vitro</i> resistance to daclatasvir (DCV) and ...
    • Cardiorespiratory fitness and future risk of venous thromboembolism 

      Evensen, Line Holtet; Isaksen, Trond; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-25)
      <i>Background</i> - Cardiorespiratory fitness (CRF) is a strong predictor of future arterial cardiovascular disease and premature mortality. However, there are limited data on the association between CRF and the risk of incident venous thromboembolism (VTE).<p><p> <i>Objectives</i> - To investigate whether estimated CRF (eCRF) was associated with the risk of incident VTE in a cohort recruited ...
    • LDL-cholesterol goal achievement, cardiovascular disease, and attributed risk of Lp(a)in a large cohort of predominantly genetically verified familial hypercholesterolemia 

      Bogsrud, Martin Prøven; Græsdal, Asgeir; Johansen, Dan; Langslet, Gisle; Hovland, Anders; Arnesen, Kjell Erik; Mundal, Liv; Retterstøl, Kjetil; Wium, Cecilie; Holven, Kirsten Bjørklund (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-30)
      <i>Background</i> - Current treatment goals for familial hypercholesterolemia (FH) recommended by the European Atherosclerosis Society (EAS) are LDL-C ≤2.5 mmol/L (∼100 mg/dL) or ≤1.8 mmol/L (∼70 mg/dL) in very high-risk subjects.<p> <p><i>Objective</i> - The objective of the present study was to investigate characteristics and treatment status in subjects with genetically verified FH followed ...
    • Validation of the multiple sclerosis diagnosis in the Norwegian Patient Registry 

      Benjaminsen, Espen; Myhr, Kjell-Morten; Grytten, Nina; Alstadhaug, Karl Bjørnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-04)
      <i>Background</i> - Health registries may yield important data for epidemiological studies. However, in order to be a valuable source for information, the registered data have to be correct.<p><p> <i>Objectives</i> - The aim of the study was to validate data from the Norwegian Patient Registry (NPR) regarding multiple sclerosis (MS).<p><p> <i>Materials and Methods</i> - We obtained data ...
    • Machine Learning of Infant Spontaneous Movements for the Early Prediction of Cerebral Palsy: A Multi-Site Cohort Study 

      Ihlen, Espen Alexander F.; Støen, Ragnhild; Boswell, Lynn; de-Regnier, Raye-Ann; Fjørtoft, Toril Larsson; Gaebler-Spira, Deborah; Labori, Cathrine; Loennecken, Marianne; Msall, Michael; Møinichen, Unn Inger; Peyton, Colleen; Schreiber, Michael; Silberg, Inger Elisabeth; Songstad, Nils Thomas; Vågen, Randi; Øberg, Gunn Kristin; Adde, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-18)
      <i>Background</i>: Early identification of cerebral palsy (CP) during infancy will provide opportunities for early therapies and treatments. The aim of the present study was to present a novel machine-learning model, the Computer-based Infant Movement Assessment (CIMA) model, for clinically feasible early CP prediction based on infant video recordings.<p><p> <i>Methods</i>: The CIMA model was ...
    • ABCC9-related intellectual disability Myopathy Syndrome is a KATP channelopathy with loss-of-function mutations in ABCC9 

      Smeland, Marie Falkenberg; McClenaghan, Conor; Roessler, Helen I.; Savelberg, Sanne; Hansen, Geir Åsmund Myge; Hjellnes, Helene; Arntzen, Kjell Arne; Müller, Kai Ivar; Dybesland, Andreas R.; Harter, Theresa; Sala-Rabanal, Monica; Emfinger, Chris H.; Huang, Yan; Singareddy, Soma S.; Gunn, Jamie; Wozniak, David F.; Kovacs, Attila; Massink, Maarten; Tessadori, Federico; Kamel, Sarah M.; Bakkers, Jeroen; Remedi, Maria S.; Van Ghelue, Marijke; Nichols, Colin G.; van Haaften, Gijs (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-01)
      Mutations in genes encoding K<sub>ATP</sub> channel subunits have been reported for pancreatic disorders and Cantú syndrome. Here, we report a syndrome in six patients from two families with a consistent phenotype of mild intellectual disability, similar facies, myopathy, and cerebral white matter hyperintensities, with cardiac systolic dysfunction present in the two oldest patients. Patients are ...
    • A Systems-Based Map of Human Brain Cell-Type Enriched Genes and Malignancy-Associated Endothelial Changes 

      Dusart, Philip James; Hallström, Björn M.; Renne, Thomas; Odeberg, Jacob Olof; Uhlén, Mathias; Butler, Lynn (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-05)
      Changes in the endothelium of the cerebral vasculature can contribute to inflammatory, thrombotic, and malignant disorders. The importance of defining cell-type-specific genes and their modification in disease is increasingly recognized. Here, we develop a bioinformatics-based approach to identify normal brain cell-enriched genes, using bulk RNA sequencing (RNA-seq) data from 238 normal human cortex ...
    • Biological membranes in EV biogenesis, stability, uptake, and cargo transfer: an ISEV position paper arising from the ISEV membranes and EVs workshop 

      Russell, Ashley E.; Sneider, Alexandra; Witwer, Kenneth W.; Bergese, Paolo; Bhattacharyya, Suvendra N.; Cocks, Alexander; Cocucci, Emanuele; Erdbrügger, Uta; Falcón-Pérez, Juan M.; Freeman, David W.; Gallagher, Thomas M.; Hu, Shuaishuai; Huang, Yiyao; Jay, Steven M.; Kano, Shin-ichi; Lavieu, Gregory; Leszczynska, Aleksandra; Llorente Martinez, Alicia; Lu, Quan; Mahairaki, Vasiliki; Muth, Dillon C.; Hooten, Nicole Noren; Ostrowski, Matias; Prada, Ilaria; Sahoo, Susmita; Schøyen, Tine Hiorth; Sheng, Lifu; Tesch, Deanna; Van Niel, Guillaume; Vandenbroucke, Roosmarijn E.; Verweij, Frederik J.; Villar, Ana V.; Wauben, Marca; Wehman, Ann M.; Yin, Hang; Carter, David Raul Francisco; Vader, Pieter (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-08)
      Paracrine and endocrine roles have increasingly been ascribed to extracellular vesicles (EVs) generated by multicellular organisms. Central to the biogenesis, content, and function of EVs are their delimiting lipid bilayer membranes. To evaluate research progress on membranes and EVs, the International Society for Extracellular Vesicles (ISEV) conducted a workshop in March 2018 in Baltimore, Maryland, ...
    • Post-Concussion Symptoms in Complicated vs. Uncomplicated Mild Traumatic Brain Injury Patients at Three and Six Months Post-Injury: Results from the CENTER-TBI Study 

      Voomolen, DC; Haagsma, JA; Polinder, Suzanne; Maas, AIR; Steyerberg, Ewout W; Vulekovic, Peter; Sewalt, CA; Gravesteijn, BY; Covic, Amra; Andelic, Nada; Plass, AM; von Steinbüchel, Nicole; Vik, Anne; Andreassen, Lasse; Anke, Audny; Frisvold, Shirin Kordasti; Helseth, Eirik; Skandsen, Toril; Røise, Olav; Håberg, Asta; Røe, Cecilie (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-08)
      Abstract The aim of this study was to assess the occurrence of post-concussion symptoms and post-concussion syndrome (PCS) in a large cohort of patients after complicated and uncomplicated mild traumatic brain injury (mTBI) at three and six months post-injury. Patients were included through the prospective cohort study: Collaborative European NeuroTrauma Effectiveness Research (CENTER-TBI). Patients ...
    • Contribution of serum biomarkers to prognostic assessment in patients with oligometastatic prostate cancer 

      Nieder, Carsten; Dalhaug, Astrid; Pawinski, Adam (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04)
      <i>Background/Aim</i>: The aim of this study was to analyze the prognostic impact of biomarkers, such as serum lactate dehydrogenase (LDH), in patients with oligometastatic castration-resistant prostate cancer, arbitrarily defined as a maximum of five metastatic lesions.<p><p> <i>Patients and Methods</i>: This was a retrospective single-institution analysis. Overall 34 patients were included, ...
    • Praktisk håndtering av hodepine 

      Aamodt, Anne Hege; Bjørk, Marte-Helene; Alstadhaug, Karl Bjørnar; Eldøen, Guttorm; Dueland, Aud Nome; Poole, Tine; Hagen, Knut; Vetvik, Kjersti; Ofte, Hilde Karen; Sønnervik, Julie; Kristoffersen, Espen Saxhaug; Winsvold, Bendik K S; Lundqvist, Christofer; Sagabråten, Ståle Onsgår (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-03)
      Korrekt diagnostikk av ulike hodepinetyper kan være utfordrende, men det er den viktigste forutsetningen for optimal behandling. Det anbefales kontrollert bruk av anfallsmedisin og forebyggende tiltak.<p> <p>Hodepinesykdommer er ifølge sykdomsbyrdeprosjektet Global Burden of Disease blant de vanligste årsakene til funksjonsnedsettelse (1). Lidelsene påvirker i stor grad samfunnet, personene som ...
    • Radiosynthesis and biological investigation of a novel fluorine-18 labeled benzoimidazotriazine- based radioligand for the imaging of phosphodiesterase 2A with positron emission tomography 

      Ritawidya, Rien; Wenzel, Barbara; Teodoro, Rodrigo; Toussaint, Magali; Kranz, Mathias; Deuther-Conrad, Winnie; Dukić-Stefanović, Sladjana; Ludwig, Friedrich-Alexander; Scheunemann, Matthias; Brust, Peter (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-15)
      A specific radioligand for the imaging of cyclic nucleotide phosphodiesterase 2A (PDE2A) via positron emission tomography (PET) would be helpful for research on the physiology and disease-related changes in the expression of this enzyme in the brain. In this report, the radiosynthesis of a novel PDE2A radioligand and the subsequent biological evaluation were described. Our prospective compound ...
    • C-X-C ligand 16 is an independent predictor of cardiovascular death and morbidity in acute coronary syndromes 

      Andersen, Thomas; Ueland, Thor; Ghukasyan Lakic, Tatevik; Åkerblom, Axel; Bertilsson, Maria; Aukrust, Pål; Michelsen, Annika E; James, Stefan K.; Becker, Richard C.; Storey, Robert F.; Wallentin, Lars; Siegbahn, Agneta; Kontny, Frederic (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-26)
      <i>Objective:</i> - The chemokine CXCL16 (C-X-C motif ligand 16) is a scavenger receptor for OxLDL (oxidized low-density lipoproteins) and involved in inflammation at sites of atherosclerosis. This study aimed to investigate the association of CXCL16 with clinical outcome in patients with acute coronary syndrome.<p> <p><i>Approach and Results:</i> - Serial measurements of CXCL16 were performed ...
    • The influences of morphine or ketamine pre-treatment on hemodynamic, acid-base status, biochemical markers of brain damage and early survival in rats after asphyxial cardiac arrest 

      Kuklin, Vladimir; Akhatov, Nurlan; Kondratiev, Timofei; Konkayev, Aidos; Baigenzhin, Abai K.; Konkayeva, Maiya; Karibekov, Temirlan; Barlow, Nicholas; Tveita, Torkjel; Dahl, Vegard (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-20)
      <i>Background</i> - In different models of hypoxia, blockade of opioid or N-methyl-D-aspartate (NMDA) receptors shows cardio- and neuroprotective effects with a consequent increase in animal survival. The aim of the study was to investigate effects of pre-treatment with Morphine or Ketamine on hemodynamic, acid-base status, early survival, and biochemical markers of brain damage in a rat model of ...
    • Elevated cholesteryl ester transfer protein activity early in pregnancy predicts prediabetes 5 years later 

      Ueland, Thor; Roland, Marie Cecilie; Michelsen, Annika; Godang, Kristin; Aukrust, Pål; Henriksen, Tore; Bollerslev, Jens; Lekva, Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-29)
      <i>Context</i> - Cholesteryl ester transfer protein (CETP) regulates high-density lipoprotein (HDL) cholesterol levels and interaction between glucose, and HDL metabolism is central in the development of diabetes.<p> <p><i>Objective</i> - We hypothesized that CETP levels would be regulated in diabetic pregnancies. We tested the hypothesis by evaluating CETP activity measured multiple times during ...