Now showing items 341-360 of 713

    • Methacrylates in polymer-resin based dental materials: Assessment of exposure and biological effects 

      Nilsen, Bo Wold (Doctoral thesis; Doktorgradsavhandling, 2018-05-04)
      Materials used in dentistry are largely polymer-resin based dental materials (PRMs). PRMs contain methacrylates and organic additives that may cause adverse effects in exposed patients and dental personnel. The purpose of this thesis was to study biological effects of one of the most commonly used methacrylate in PRMs, and to investigate how patients and dental health personnel may be exposed to ...
    • Antibiotic Therapy for Neonatal Sepsis - Studies on epidemiology, gentamicin safety, and early adverse effects of antibiotics 

      Fjalstad, Jon Widding (Doctoral thesis; Doktorgradsavhandling, 2018-05-25)
      Objectives: The overall aim of this thesis was to investigate different aspects of antibiotic therapy for neonatal sepsis. Material and Methods: The epidemiology of early onset sepsis (EOS) and systemic antibiotic exposure in the first week of life was studied in a nationwide population-based study from the Norwegian Neonatal Network between 2009-2011. A high-dose extended-interval gentamicin ...
    • Atrial Fibrillation: A prospective population study of risk factors and complications. The Tromsø Study 

      Tiwari, Sweta (Doctoral thesis; Doktorgradsavhandling, 2018-04-26)
      Background: Atrial Fibrillation (AF) is the most common arrhythmia associated with increased mortality and morbidity. It increases the lifetime risk of stroke and heart failure and affects one’s quality of life and cognition. Objective: To investigate diastolic dysfunction as risk factor for AF and AF as a risk factor for stroke and cognitive decline. Methods: Participants from the Tromsø Study ...
    • Upbringing by relatives. Incorporating new understandings and perspectives into the study of kinship foster care 

      Skoglund, Jeanette (Doctoral thesis; Doktorgradsavhandling, 2018-06-27)
      Oppvekst i slekt er en praksisform som har lange tradisjoner i den private sfære. Slektsfosterhjem derimot, som kategori og tiltak i barnervernet er et realtivt nytt fenomen. I forskning har oppvekst i og blant slektninger primært blitt utforsket blant antropologer. Med institusjonaliseringen og kategoriseringen av slektsfosterhjem har fenomenet blitt aktuelt også innenfor barnevernrelatert forskning. ...
    • Predicting rupture of intracranial aneurysms: morphological and hemodynamic parameters. 

      Skodvin, Torbjørn Øygard (Doctoral thesis; Doktorgradsavhandling, 2018-04-27)
      BACKGROUND: Because of extended use of cerebral imaging, unruptured intracranial aneurysms are increasingly discovered as incidental findings. Management of unruptured aneurysms is controversial because patients and clinicians must weigh the risks of prophylactic endovascular or surgical treatment against the uncertain risk of rupture. We aimed to investigate the use of hemodynamic and morphological ...
    • Red Cell Distribution Width (RDW) and future risk of arterial cardiovascular diseases 

      Lappegård, Jostein (Doctoral thesis; Doktorgradsavhandling, 2018-05-28)
      Myocardial infarction (MI) and stroke rank as the top two killers on the world health organization’s causes of death statistics. Awareness of risk factors is important for targeted prevention of disease, and identification of novel risk factors can further improve the preventive measures. Red cell distribution width (RDW), a measure of the variability in size of the circulating erythrocytes, could ...
    • Red cell distribution width and risk of venous thromboembolism 

      Ellingsen, Trygve Sølberg (Doctoral thesis; Doktorgradsavhandling, 2018-06-11)
      Venous thromboembolism (VTE) is a collective term for deep vein thrombosis and pulmonary embolism. VTE is the third most common cardiovascular disease, causing significant morbidity and mortality. The incidence of VTE has been stable or slightly increasing during the last decades, affecting 1-2 per 1000 individuals each year. Up to half of all VTE patients have no obvious cause of the disease. Thus, ...
    • Perioperative quality assurance in neurosurgery 

      Sjåvik, Kristin (Doctoral thesis; Doktorgradsavhandling, 2018-06-08)
      Abstract Background Perioperative treatment for common neurosurgical conditions such as chronic subdural hematomas (CSDH) and meningiomas vary. The perioperative period is by definition the time span from 24 hours before surgery until 30 days postoperatively. Even if the surgical treatment in the operation theater can be exactly the same, complication rates differ, and results vary. The aim of ...
    • Oxidative stress and inflammation as risk factors for accelerated age-related GFR decline and albuminuria in the general population 

      Schei, Jørgen (Doctoral thesis; Doktorgradsavhandling, 2018-06-08)
      The prevalence of chronic kidney disease (CKD) increases rapidly with age, affecting more than one-third of people over 70 years old. The age-related glomerular filtration rate (GFR) decline is an important risk factor for CKD and kidney failure. Identifying novel risk factors for early kidney disease, manifested as accelerated GFR decline or low-grade albuminuria, may suggest underlying pathologic ...
    • Mapping the experience and use of traditional healing in Northern Norway. Among conventional health care providers, users and traditional healers 

      Larsen, Anette Iren Langås (Doctoral thesis; Doktorgradsavhandling, 2018-05-31)
      The aim of this research project was to improve the knowledge of the people in Northern Norway (the Sami, Kven, and Norwegians) understanding of health, including the use of traditional healing. We conducted 60 semi-structured interviews and 7 focus group interviews. The participants were health personnel, healers, and users of traditional healing. Both the Sami and Norwegians often used traditional ...
    • Role of Laeverin in the pathophysiology of preeclampsia 

      Nystad, Mona (Doctoral thesis; Doktorgradsavhandling, 2018-05-11)
      Preeclampsia is a pregnancy-specific disease, affecting 5-10% of human pregnancies worldwide. It is defined as new-onset hypertension after 20 weeks of gestation with either proteinuria and/or organ failure. Laeverin is a membrane-bound aminopeptidase exclusively expressed in the placenta. Our previous studies revealed a significant upregulation of laeverin mRNA in preeclamptic placentas, building ...
    • What are the molecular consequences of germline mutations in breast and ovarian cancer susceptibility genes in a Norwegian breast and ovarian cancer population? 

      Jarhelle, Elisabeth (Doctoral thesis; Doktorgradsavhandling, 2018-06-01)
      It is estimated that 5-10% of breast cancers (BC) and 25% of ovarian cancers (OC) are caused by inherited sequence variants in genes. In the mid 90’s, the two genes BRCA1 and BRCA2 were discovered to be directly associated with increased risk of BC and OC. Molecular screening of these two genes has revealed several disease causing variants as well as variants of unknown clinical significance (VUS). ...
    • Recovery from self-harm. A qualitative study. 

      Tofthagen, Randi (Doctoral thesis; Doktorgradsavhandling, 2018-05-11)
      The overall aim of this dissertation was to expand understanding of the recovery from direct self-harm for adult persons who self-harm through three partial studies. Study I included a theoretical evolutionary concept analysis to clarify the content of the concept self-harm as delineated to the disciplines of medicine and nursing. Studies II and III were interview studies. In study II, mental health ...
    • Role of Extracellular Vesicles in the Pathogenesis of Venous Thromboembolism 

      Jamaly, Simin (Doctoral thesis; Doktorgradsavhandling, 2018-06-13)
      Venous thromboembolism (VTE) is a common disease with an incidence of 1–2 per 1000 individuals. VTE is a collective term for deep vein thrombosis and pulmonary embolism. Extracellular vesicles (EVs) are lipid-membrane-bound spherical vesicles that bud off from the cells upon activation and apoptosis. Their size varies between 30 nm and 1 μm. Recent advances in experimental and observational studies ...
    • Transcranial direct current stimulation: the effect on functional outcomes in the pain and motor domains 

      Fagerlund, Asbjørn Johansen (Doctoral thesis; Doktorgradsavhandling, 2015-06-08)
      The physiological effects of transcranial direct current stimulation (tDCS) in the living human brain were verified experimentally in the early 2000's. A series of studies from Göttingen, Germany, shows that consistently, anodal stimulation lead to increased cortical excitability, while cathodal stimulation leads to increased cortical inhibition. Since then, the effect of tDCS has been further ...
    • Growing an information infrastructure for healthcare based on the development of large-scale Electronic Patient Records 

      Silsand, Line (Doctoral thesis; Doktorgradsavhandling, 2018-04-04)
      This thesis provides empirical insights about socio-technical interdependencies affecting the making and scaling of an Information Infrastructure (II) for healthcare based on the development of large-scale Electronic Patient Records. The Ph.D. study is an interpretive case study, where the empirical data has been collected from 2012 to 2017. In most developed countries, the pressures from politicians ...
    • Changes in smoking behavior during pregnancy: prevalence and effect on selected adverse pregnancy and birth outcomes. The Murmansk County Birth Registry study 

      Kharkova, Olga A. (Doctoral thesis; Doktorgradsavhandling, 2018-04-06)
      Aims:<br> The specific objectives of this thesis were to i) determine the prevalence of smoking before and during pregnancy and to assess socio-demographic factors associated with discontinuing smoking or smoking reduction once pregnant; ii) investigate the effect of first-trimester smoking cessation while pregnant on Preeclampsia/eclampsia; and iii) explore the effect of changes in smoking behavior ...
    • Cortical porosity, medullary adiposity, type 2 diabetes mellitus, serum vitamin D, parathyroid hormone, and nonvertebral fractures 

      Osima, Marit (Doctoral thesis; Doktorgradsavhandling, 2018-03-28)
      Despite advances in therapies, assessment of fracture risk, and diagnosis of bone fragility, few women and men with high fracture risk receive treatment, even after they develop fracture. To be able to recognize and identify subjects who are at risk for fragility fracture, and to target treatment well, it is important to search for risk factors that are associated with, or ideally, predict fracture. ...
    • Storage of vitamin D in adipose tissue and associations between vitamin D related genetic variants and diabetes, myocardial infarction, cancer, death, and low bone mineral density. Results from a high-dose vitamin D study and the Tromsø Study 

      Martinaityte, Ieva (Doctoral thesis; Doktorgradsavhandling, 2018-03-22)
      Cholecalciferol (vitamin D) is a biologically active substance, which acts in both skeletal and non-skeletal metabolic pathways, and is stored most in adipose tissue. Its active metabolite 1,25-dihydroxyvitamin D (1,25(OH)2D), bound to the vitamin D receptor (VDR), regulates gene expression and initiates rapid responses in the cells that regulate bone and adipose tissue homeostasis, lead to ...
    • Unrecognized Myocardial Infarction. Pain tolerance, prognosis and pathogenesis in men and women 

      Øhrn, Andrea Sofie Henriette Milde (Doctoral thesis; Doktorgradsavhandling, 2018-03-22)
      Mange gjennomgår et hjerteinfarkt uten å vite at det har skjedd, dette kalles stumme hjerteinfarkt. Det er ikke kjent hvorfor noen rammes av stumme hjerteinfarkt, mens andre opplever brystsmerter og tar kontakt med lege. I Tromsøundersøkelsens 6.runde ble 6,199 personer undersøkt med EKG, der man kan se om en person har gjennomgått et hjerteinfarkt. I tillegg ble det samlet inn data på smertefølsomhet ...