Now showing items 1341-1360 of 1850

    • Iohexol plasma clearance for measuring glomerular filtration rate in clinical practice and research: a review. Part 1: How to measure glomerular filtration rate with iohexol? 

      Delanaye, Pierre; Ebert, Natalie; Melsom, Toralf; Gasperi, Flavia; Mariat, Christophe; Cavalier, Etienne; Björk, Jonas; Christensson, Anders; Nyman, Ulf; Porrini, Esteban; Remuzzi, Giuseppe; Ruggenenti, Piero; Schaeffner, Elke; Soveri, Inga; Sterner, Gunnar; Eriksen, Bjørn Odvar; Bäck, Sten-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-23)
      While there is general agreement on the necessity tomeasure glomerular filtration rate (GFR) inmany clinical situations, there is less agreement on the bestmethod to achieve this purpose.As the gold standardmethod for GFR determination, urinary (or renal) clearance of inulin, fades into the background due to inconvenience and high cost, a diversity of filtrationmarkers and protocols compete to ...
    • Associations between Common and Rare Exonic Genetic Variants and Serum Levels of 20 Cardiovascular-Related Proteins: The Tromsø Study 

      Solomon, Terry; Smith, Erin N.; Matsui, Hiroko; Brækkan, Sigrid Kufaas; Wilsgaard, Tom; Njølstad, Inger; Mathiesen, Ellisiv B.; Hansen, John-Bjarne; Frazer, Kelly A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-06-21)
      Background—Genetic variation can be used to study causal relationships between biomarkers and diseases. Here, we identify new common and rare genetic variants associated with cardiovascular-related protein levels (protein quantitative trait loci [pQTLs]). We functionally annotate these pQTLs, predict and experimentally confirm a novel molecular interaction, and determine which pQTLs are associated ...
    • A retrospective comparison of ultrasound-assisted catheter-directed thrombolysis and catheter-directed thrombolysis alone for treatment of proximal deep vein thrombosis 

      Tichelaar, Ynse Ieuwe Gerardus Vladimir; Brodin, Ellen Elisabeth; Vik, Anders; Isaksen, Trond; Skjeldestad, Finn Egil; Kumar, Satish; Trasti, Nora; Singh, Kulbir; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      Background: Recent studies have suggested that catheterdirected thrombolysis (CDT) reduces development of postthrombotic syndrome (PTS). Ultrasound-assisted CDT (USCDT) might enhance the efficiency of thrombolysis. We aimed to compare USCDT with CDT on efficacy, safety, development of PTS, and quality of life after longterm follow-up. <p>Methods: We describe a retrospective case series of 94 ...
    • Effects of Vitamin D binding protein phenotypes and Vitamin D supplementation on serum total 25(OH)D and directly measured free 25(OH)D 

      Sollid, Stina Therese; Strand Hutchinson, Moira; Berg, Vivian; Fuskevåg, Ole-Martin; Figenschau, Yngve Anton; Thorsby, Per Medbøe; Jorde, Rolf (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01-05)
      Objective:<br>To determine the relationship between serum total 25-hydroxyvitamin D (25(OH)D), directly measured free 25(OH)D and calculated free 25(OH)D with regard to vitamin D-binding protein (DBP) phenotypes, sex, BMI, age and season, and their interrelationship to vitamin D supplementation.<br>Design, patients and interventions:<br>A randomized controlled trial with 20 000 IU of vitamin D3 per ...
    • Lack of association between cluster headache and PER3 clock gene polymorphism 

      Ofte, Hilde Karen; Tronvik, Erling Andreas; Alstadhaug, Karl Bjørnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-29)
      Background Cluster headache (CH) is regarded as a chronobiological disorder. The hypothalamic biological clock may thus be involved in the pathophysiology, but few studies have actually investigated this in CH patients. A variable number tandem repeat (VNTR) polymorphism of the PER3 clock gene has been associated to preferred daily rhythm (chronotype) in several studies. We aimed to study the ...
    • Mesenchymal stromal cells from human umbilical cords display poor chondrogenic potential in scaffold-free three dimensional cultures 

      Islam, Md Ashraful; Hansen, Ann Kristin; Mennan, Claire; Martinez, Inigo Zubiavrre (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-27)
      Many researchers world over are currently investigating the suitability of stromal cells harvested from foetal tissues for allogeneic cell transplantation therapies or for tissue engineering purposes. In this study, we have investigated the chondrogenic potential of mesenchymal stromal cells (MSCs) isolated from whole sections of human umbilical cord or mixed cord (UCSCs-MC), and compared them with ...
    • Ultrasound in management of rheumatoid arthritis: ARCTIC randomised controlled strategy trial 

      Haavardsholm, Espen A.; Aga, Anna-Birgitte; Olsen, Inge Christoffer; Lillegraven, Siri; Hammer, Hilde Berner; Uhlig, Till; Fremstad, Hallvard; Madland, Tor Magne; Lexberg, Åse; Haukeland, Hilde; Rødevand, Erik; Høili, Christian; Stray, Hilde; Noraas, Anne Lindtner; Hansen, Inger Johanne Widding; Bakland, Gunnstein; Nordberg, Lena Kristine Bugge; Heijde, Desirée van der; Kvien, Tore Kristian (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-16)
      Objective: To determine whether a treatment strategy based on structured ultrasound assessment would lead to improved outcomes in rheumatoid arthritis, compared with a conventional strategy. <p>Design: Multicentre, open label, two arm, parallel group, randomised controlled strategy trial. <p>Setting: Ten rheumatology departments and one specialist centre in Norway, from September 2010 to ...
    • Dispatch guideline adherence and response interval-a study of emergency medical calls in Norway 

      Ellensen, Eirin Nybø; Wisborg, Torben; Hunskaar, Steinar; Zakariassen, Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-13)
      Background:<br> The Emergency Medical Communication Centre (EMCC) operators in Norway report using the Norwegian Index for Medical Emergency Assistance (Index), a criteria-based dispatch guideline, in about 75 % of medical emergency calls. The main purpose of a dispatch guideline is to assist the operator in securing a correct response as quickly as possible. The effect of using the guideline on ...
    • The assessment of serum-mediated phagocytosis of necrotic material by polymorphonuclear leukocytes to diagnose and predict the clinical features of systemic lupus erythematosus: An observational longitudinal study 

      Compagno, Michele; Gullstrand, Birgitta; Eilertsen, Gro Østli; Nilsson, Jan Åke; Lood, Christian; Jönsen, Andreas; Truedsson, Lennart; Sturfelt, Gunnar; Bengtsson, Anders A (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-10)
      Background: Serum-mediated phagocytosis of antibody- and complement-opsonized necrotic cell material (NCM) by polymorphonuclear leukocytes can be quantified by using a flow cytometry–based assay. The phagocytosis of necrotic cell material (PNC) assay parallels the well-known lupus erythematosus cell test. In this study, we aimed to investigate the diagnostic accuracy of the assay and the relationship ...
    • An examination of the language construct in NIMH's research domain criteria: Time for reconceptualization! 

      Elvevåg, Brita; Cohen, Alex S.; Wolters, Maria K.; Whalley, Heather C.; Gountouna, Viktoria-Eleni; Kuznetsova, Ksenia A.; Watson, Andrew R.; Nicodemus, Kristin K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-10)
      The National Institute of Mental Health’s Research Domain Criteria (RDoC) Initiative “calls for the development of new ways of classifying psychopathology based on dimensions of observable behavior.” As aresult of this ambitious initiative, language has been identifi d as an independent construct in the RDoC matrix. In this article, we frame language within an evolutionary and neuro- ...
    • Macular thickness in healthy eyes of adults (N=4508) and relation to sex, age and refraction: The Tromsø Eye Study (2007-08) 

      Hanno, Therese von; Lade, Anette Caroline; Mathiesen, Ellisiv B.; Peto, Tunde; Njølstad, Inger; Bertelsen, Geir (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-12-18)
      Purpose: To provide sex-stratified normative data on retinal thickness and study the relationship with sex, age and refractive status. Methods: Population-based study including 2617 women and 1891 men, aged 38– 87 (mean 61 8) years, without diabetes, glaucoma and retinal diseases, and spherical equivalent refraction (SER) within 6 dioptres. Retinal thickness was measured with optical coherence ...
    • Assessing and Improving EHRs Data Quality through a Socio-technical Approach 

      Darko-Yawson, Samuel; Ellingsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-21)
      The implementation of Electronic Health Records (EHRs) in developing countries is considered a means for improving data quality and high quality care. However, existing research, indicate that EHRs have recorded greater quantity of bad data instead of improving the quality of data. The reasons for this is not exactly clear. Accordingly, this paper takes a broader socio-technical approach to explore ...
    • Concepts of ‘self’ in delusion resolution 

      Longenecker, Julia; Hui, Christy; Chen, Eric YH; Elvevåg, Brita (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-12-04)
      The concept of ‘self’ has a pivotal role in psychotic symptoms (Conrad, 1958), but its utility in the treatment process has been limited. Since perceptions of ‘self’ – and of ‘others’ – change as symptoms evolve and resolve (Parnas andHandest, 2003), if appropriately assayed this concept provides a unique entry-point through which the congruity between delusions and illness can be examined. The ...
    • The Association Between Adiponectin, Serum Uric Acid and Urinary Markers of Renal Damage in the General Population: Cross-Sectional Data from the Tromsø Study 

      Solbu, Marit Dahl; Norvik, Jon Viljar; Storhaug, Hilde-Merete; Eriksen, Bjørn Odvar; Melsom, Toralf; Eggen, Anne Elise; Zykova, Svetlana; Kronborg, Jens; Jenssen, Trond Geir (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-14)
      Background/Aims: Uric acid may cause renal damage, whereas adiponectin in some studies has been reported to have renoprotective properties. The renoprotective role of adiponectin under the influence of hyperuricemia has not been explored. We assessed the cross-sectional association between adiponectin, serum uric acid (SUA) and urinary biomarkers of glomerular and tubular damage (albumin-creatinine ...
    • Epidemiology and health related quality of life in hypoparathyroidism in Norway 

      Astor, Marianne; Løvås, Kristian; Debowska, Aleksandra; Eriksen, Erik Fink; Evang, Johan Arild; Fossum, Jan Christian; Fougner, Kristian J; Holte, Synnøve E.; Lima, Kari; Moe, Ragnar Bekkhus; Myhre, Anne Grethe; Kemp, E. Helen; Nedrebø, Bjørn Gunnar; Svartberg, Johan; Husebye, Eystein Sverre (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-17)
      <b>Objective:</b> The epidemiology of hypoparathyroidism (HP) is largely unknown. We aimed to determine prevalence, etiologies, health related quality of life (HRQOL) and treatment pattern of HP.<br> <b>Methods:</b> Patients with HP and 22q11 deletion syndrome (DiGeorge syndrome) were identified in electronic hospital registries. All identified patients were invited to participate in a survey. ...
    • Vitamin D deficiency in Europe: pandemic? 

      Cashman, Kevin D.; Dowling, Kirsten G.; Škrabáková, Zuzana; Gonzalez-Gross, Marcela; Valtueña, Jara; De Henauw, Stefaan; Moreno, Luis; Damsgaard, Camilla T.; Michaelsen, Kim F.; Mølgaard, Christian; Jorde, Rolf; Grimnes, Guri; Moschonis, George; Mavrogianni, Christina; Manios, Yannis; Thamm, Michael; Mensink, Gert B.M.; Rabenberg, Martina; Busch, Markus A.; Cox, Lorna; Meadows, Sarah; Goldberg, Gail; Prentice, Ann; Dekker, Jacqueline M.; Nijpels, Giel; Pilz, Stefan; Swart, Karin M.; Van Schoor, Natasja M.; Lips, Paul; Eiriksdóttir, Gudny; Gudnason, Vilmundur; Cotch, Mary Frances; Koskinen, Seppo; Lamberg-Allardt, Christel; Durazo-Arvizu, Ramon A.; Sempos, Christopher T.; Kiely, Mairead (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-10)
      Background:<br>Vitamin D deficiency has been described as being pandemic, but serum 25-hydroxyvitamin D [25(OH)D] distribution data for the European Union are of very variable quality. The NIH-led international Vitamin D Standardization Program (VDSP) has developed protocols for standardizing existing 25(OH)D values from national health/nutrition surveys.<br>Objective:<br>This study applied VDSP ...
    • Impact of incident myocardial infarction on the risk of venous thromboembolism: the Tromsø Study 

      Balteskard Rinde, Ludvig; Lind, Caroline; Småbrekke, Birgit; Njølstad, Inger; Mathiesen, Ellisiv B.; Wilsgaard, Tom; Løchen, Maja-Lisa; Mathiesen Hald, Erin; Vik, Anders; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne; Rinde, Ludvig Balteskard (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-10)
      Background: Recent studies have demonstrated an association between venous thromboembolism (VTE) and arterial thrombotic diseases. <p> Objectives: We aimed to study the association between incident myocardial infarction (MI) and VTE in a prospective population-based cohort. <p> Methods: Study participants (n=29 506) were recruited from three surveys of the Tromsø Study (conducted in 1994-95, 2001-02 ...
    • Combined inhibition of complement and CD14 attenuates bacteria-induced inflammation in human whole blood more efficiently than antagonizing the toll-like receptor 4-MD2 complex 

      Gustavsen, Alice; Nymo, Stig Haugset; Landsem, Anne; Christiansen, Dorte; Ryan, Liv; Husebye, Harald; Lau, Corinna; Pischke, Søren Erik; Lambris, John D.; Espevik, Terje; Mollnes, Tom Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-14)
      <i>Background</i>: Single inhibition of the Toll-like receptor 4 (TLR4)–MD2 complex failed in treatment of sepsis. CD14 is a coreceptor for several TLRs, including TLR4 and TLR2. The aim of this study was to investigate the effect of single TLR4-MD2 inhibition by using eritoran, compared with the effect of CD14 inhibition alone and combined with the C3 complement inhibitor compstatin (Cp40), on the ...
    • En kvinne med feber, røde øyne og utbredt utslett. 

      Bremnes, Øyvind; Grimstad, Øystein; Bremnes, Katja (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-08)
      En kvinne i 70-årene ble innlagt i medisinsk avdeling med spørsmål om allergi. Hun hadde feber, frostanfall, muskel- og leddsmerter, kløende utslett og bilateral konjunktival injeksjon. Det ble en langvarig innleggelse med et livstruende forløp.
    • The Multifaceted Challenges in Teacher-Student Relationships: A Qualitative Study of Teachers' and Principals' Experiences and Views Regarding the Dropout Rate in Norwegian Upper-Secondary Education 

      Ottosen, Karl Ottar; Goll, Charlotte Bjørnskov; Sørlie, Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-04-12)
      The purpose of our study was to enhance understanding of teachers' and principals' experiences and views regarding the high dropout rate in Norwegian upper secondary schools. Qualitative analysis showed that the teacher-student relationships over years had become more complicated since the implementation of a new educational reform, making the syllabus increasingly theoretical and thus reducing the ...