• Impact of incident venous thromboembolism on risk of arterial thrombotic diseases 

      Lind, Caroline; Flinterman, Linda E.; Enga, Kristin; Severinsen, Marianne T; Kristensen, Søren R; Brækkan, Sigrid Kufaas; Mathiesen, Ellisiv B.; Njølstad, Inger; Cannegieter, Suzanne C.; Overvad, Kim; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-11-22)
      BACKGROUND: Growing evidence supports an association between venous thromboembolism (VTE) and arterial thrombotic diseases (ie, myocardial infarction and ischemic stroke). We aimed to study the association between VTE and future arterial events and to determine the population attributable risk of arterial events by VTE in a large prospective cohort recruited from the general population. METHODS AND ...
    • Impact of prothrombotic genotypes on the association between family history of myocardial infarction and venous thromboembolism 

      Småbrekke, Birgit; Balteskard Rinde, Ludvig; Evensen, Line Holtet; Morelli, Vania Maris; Hveem, Kristian; Gabrielsen, Maiken Elvestad; Njølstad, Inger; Mathiesen, Ellisiv B.; Rosendaal, Frits Richard; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-24)
      <i>Background</i>: Family history of myocardial infarction (FHMI) is known to increase the risk of venous thromboembolism (VTE).<p> <p><i>Objectives</i>: To investigate the effect of prothrombotic genotypes on the association between FHMI and VTE in a case‐cohort recruited from a general population.<p> <p><i>Methods</i>: Cases with a first VTE (<i>n</i> = 1493) and a subcohort (<i>n</i> = ...
    • The independent and joint associations of physical activity and body mass index with myocardial infarction: The Tromsø Study 

      Renninger, Marius; Løchen, Maja-Lisa; Ekelund, Ulf; Hopstock, Laila Arnesdatter; Jørgensen, Lone; Mathiesen, Ellisiv B.; Njølstad, Inger; Schirmer, Henrik; Wilsgaard, Tom; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-13)
      Physical activity and overweight are associated with myocardial infarction (MI). However, their joint association with MI remains unclear. Our objective was to examine the independent and joint association between leisuretime physical activity (LTPA), body mass index (BMI) and MI. This prospective cohort study included 16,572 men and women (47.5% women) aged 20–54 years who took part in the second ...
    • Intravenous thrombolytic treatment and endovascular thrombectomy for ischaemic wake-up stroke 

      Roaldsen, Melinda Berg; Lindekleiv, Haakon; Mathiesen, Ellisiv B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-01)
      <b><p>Background</b> About one in five strokes occur during sleep (wake-up stroke). People with wake-up strokes have previously been considered to be ineligiblefor thrombolytic treatment because the time of stroke onset is unknown. However, recent studies suggest benefit from recanalisationtherapies in selected patients. <b><p>Objectives</b> To assess the effects of intravenous thrombolysis ...
    • Ischemic Stroke and Risk of Venous Thromboembolism in the General Population: The Tromsø Study 

      Balteskard Rinde, Ludvig; Småbrekke, Birgit; Mathiesen, Ellisiv B.; Løchen, Maja-Lisa; Njølstad, Inger; Mathiesen Hald, Erin; Wilsgaard, Tom; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-07)
      <i>Background</i> - Even though clinical data support a relation between ischemic stroke and venous thromboembolism (VTE), the strength and time dependence of the association remain to be settled at the population level. We therefore aimed to investigate the association between ischemic stroke and VTE in a prospective population-based cohort.<p> <p><i>Methods and Results</i> - Participants (n=30 ...
    • Joint Effect of Carotid Plaque and C-Reactive Protein on First-Ever Ischemic Stroke and Myocardial Infarction? 

      Eltoft, Agnethe; Arntzen, Kjell Arne; Wilsgaard, Tom; Hansen, John-Bjarne; Mathiesen, Ellisiv B.; Johnsen, Stein Harald (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-17)
      Background: <br>The joint effect of atherosclerosis and CRP (C-reactive protein) on risk of ischemic stroke (IS) and myocardial infarction (MI) has been sparsely studied. The aim of this study was to explore whether CRP mediates the risk of events in subjects with prevalent carotid plaque, examine synergism, and test whether CRP and carotid plaque add to risk prediction beyond traditional risk ...
    • Joint effect of myocardial infarction and obesity on the risk of venous thromboembolism: The Tromsø Study 

      Sejrup, Joakim Knutsen; Tøndel, Birgitte Gladsø; Morelli, Vania Maris; Løchen, Maja-Lisa; Njølstad, Inger; Mathiesen, Ellisiv B.; Wilsgaard, Tom; Hansen, John Bjarne; Brækkan, Sigrid Kufaas (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-19)
      Background: Myocardial infarction (MI) is associated with an increased risk of venous thromboembolism (VTE). Obesity is a recognized risk factor for both MI and VTE. Whether obesity further increases the risk of VTE in MI patients is scarcely investigated.<p> <p>Aim: To study the joint effect of MI and obesity on the risk of VTE. <p>Methods: Study participants (n = 29 410) were recruited from ...
    • Know Your Heart: Rationale, design and conduct of a cross-sectional study of cardiovascular structure, function and risk factors in 4500 men and women aged 35-69 years from two Russian cities, 2015-18 

      Cook, Sarah; Malyutina, S; Kudryavtsev, Alexander; Averina, Maria; Bobrova, Natalia; Boytsov, S; Brage, S; Clark, TG; Diez Benavente, S; Eggen, Anne Elise; Hopstock, Laila Arnesdatter; Hughes, A; Johansen, Heidi; Kholmatova, Kamila; Kichigina, A; Kontsevaya, Anna; Kornev, M; Leong, D; Magnus, Per; Mathiesen, Ellisiv B.; McKee, M; Morgan, K; Nilssen, Odd-Ragnar; Plakhov, I; Quint, JK; Rapala, A; Ryabikov, A; Saburova, Lyudmila; Schirmer, Henrik; Shapkina, M; Shiekh, Suhail; Shkolnikov, VM; Stylidis, Michael; Voevoda, Mikhail; Westgate, Kate; Leon, David Adrew (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-04)
      Russia has one of the highest rates of cardiovascular disease in the world. The International Project on Cardiovascular Disease in Russia (IPCDR) was set up to understand the reasons for this. A substantial component of this study was the Know Your Heart Study devoted to characterising the nature and causes of cardiovascular disease in Russia by conducting large cross-sectional surveys in two Russian ...
    • Long-term blood pressure trajectories and incident atrial fibrillation in women and men: the Tromsø Study 

      Sharashova, Ekaterina; Wilsgaard, Tom; Ball, Jocasta; Morseth, Bente; Gerdts, Eva; Hopstock, Laila Arnesdatter; Mathiesen, Ellisiv B.; Schirmer, Henrik; Løchen, Maja-Lisa (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-03)
      Aims To explore sex-specific associations between long-term individual blood pressure (BP) patterns and risk of incident atrial fibrillation (AF) in the general population. Methods and results Blood pressure was measured in 8376 women and 7670 men who attended at least two of the three population-based Tromsø Study surveys conducted in 1986–87, 1994–95, and 2001. Participants were followed for ...
    • Long-Term Use of Lipid-Lowering Drugs Slows Progression of Carotid Atherosclerosis The Tromso Study 1994 to 2008 

      Herder, Marit; Arntzen, Kjell Arne; Johnsen, Stein Harald; Eggen, Anne Elise; Mathiesen, Ellisiv B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Data on the effect of lipid-lowering drugs (LLD) on carotid atherosclerosis outside clinical trials are limited. The aim of this study was to determine the effect of LLD on change in carotid intima media thickness and total plaque area in a general population. Subjects were 1532 women and 1442 men who participated in a longitudinal population-based study with ultrasound examination of intima media ...
    • Longitudinal and secular trends in total cholesterol levels and impact of lipid-lowering drug use among Norwegian women and men born in 1905–1977 in the population-based Tromsø Study 1979–2016 

      Hopstock, Laila Arnesdatter; Bønaa, Kaare; Eggen, Anne Elise; Grimsgaard, Sameline; Jacobsen, Bjarne K.; Løchen, Maja-Lisa; Mathiesen, Ellisiv B.; Njølstad, Inger; Wilsgaard, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-21)
      Objectives: <br> Elevated blood cholesterol is a modifiable risk factor for cardiovascular disease. Cholesterol level surveillance is necessary to study population disease burden, consider priorities for prevention and intervention and understand the effect of diet, lifestyle and treatment. Previous studies show a cholesterol decline in recent decades but lack data to follow individuals born ...
    • Low pain tolerance is associated with coronary angiography, coronary artery disease, and mortality: The TROMSO study 

      Fladseth, Kristina; Lindekleiv, Haakon; Nielsen, Christopher Sivert; Øhrn, Andrea; Kristensen, Andreas; Mannsverk, Jan Torbjørn; Løchen, Maja-Lisa; Njølstad, Inger; Wilsgaard, Tom; Mathiesen, Ellisiv B.; Stubhaug, Audun; Trovik, Thor; Rotevatn, Svein; Forsdahl, Signe Helene; Schirmer, Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-03)
      BACKGROUND: The initial presentation to coronary angiography and extent of coronary artery disease (CAD) vary greatly among patients, from ischemia with no obstructive CAD to myocardial infarction with 3-vessel disease. Pain tolerance has been suggested as a potential mechanism for the variation in presentation of CAD. We aimed to investigate the association between pain tolerance, coronary ...
    • Macular Layer Thickness and Effect of BMI, Body Fat, and Traditional Cardiovascular Risk Factors: The Tromsø Study 

      von Hanno, Therese; Hareide, Live Lund; Småbrekke, Lars; Morseth, Bente; Sneve, Monica; Erke, Maja Gran; Mathiesen, Ellisiv B.; Bertelsen, Geir (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-12)
      PURPOSE. The purpose of this study was to investigate associations between cardiovascular risk factors and the thickness of retinal nerve fiber layer (RNFL), ganglion cell-inner plexiform layer (GCIPL), and outer retina layers (ORL).<p> <p>METHODS. In this population-based study, we included participants from the Tromsø Study: Tromsø6 (2007 to 2008) and Tromsø7 (2015 to 2016). Persons with ...
    • 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 ...
    • Magnetic resonance volumetry: prediction of subjective memory complaints and mild cognitive impairment, and associations with genetic and cardiovascular risk factors 

      Rogne, Sigbjørn Olav; Vangberg, Torgil Riise; Eldevik, Odd Petter; Wikran, Gry Charlotte; Mathiesen, Ellisiv B.; Schirmer, Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-25)
      <i>Background/Aims</i>: Subjective memory complaints (SMC) are strong predictors of mild cognitive impairment (MCI) and subsequent Alzheimer’s disease. Our aims were to see if fully automated cerebral MR volume measurements could distinguish subjects with SMC and MCI from controls, and if probable parental late-onset Alzheimer’s disease (LOAD), apolipoprotein E ε4 genotype, total plasma homocysteine, ...
    • The metabolic syndrome and progression of carotid atherosclerosis over 13 years. The Tromsø study. 

      Herder, Marit; Arntzen, Kjell Arne; Johnsen, Stein Harald; Mathiesen, Ellisiv B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      The metabolic syndrome (MetS) is associated with increased risk of cardiovascular disease. In this study, we examine if metabolic syndrome predicts progression of atherosclerosis over 13 years. Participants were 1442 men and 1532 women in the population-based Tromsø Study who underwent carotid ultrasound examinations at baseline in the 4th (1994–5) and at follow-up in the 6th survey (2007–8). Of ...
    • Myocardial infarction and future risk of cancer in the general population—the Tromsø Study 

      Rinde, Ludvig Balteskard; Småbrekke, Birgit; Mathisen Hald, Erin; Brodin, Ellen Elisabeth; Njølstad, Inger; Mathiesen, Ellisiv B.; Løchen, Maja-Lisa; Wilsgaard, Tom; Brækkan, Sigrid Kufaas; Vik, Anders; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-07)
      The association between myocardial infarction (MI) and future risk of incident cancer is scarcely investigated. Therefore, we aimed to study the risk of cancer after a first time MI in a large cohort recruited from a general population. Participants in a large population-based study without a previous history of MI or cancer (n = 28,763) were included and followed from baseline to date of cancer, ...
    • Myocardial infarction, prothrombotic genotypes, and venous thrombosis risk: The Tromsø Study 

      Sejrup, Joakim Knutsen; Morelli, Vania Maris; Løchen, Maja-Lisa; Njølstad, Inger; Mathiesen, Ellisiv B.; Wilsgaard, Tom; Hansen, John-Bjarne; Brækkan, Sigrid Kufaas (Journal article; Tidsskriftartikkel; Peer reviewed; Master thesis; Mastergradsoppgave, 2020-01-27)
      <p><i>Background - </i>The risk of venous thromboembolism (VTE) is increased after a myocardial infarction (MI). Some prothrombotic genotypes associated with VTE have also been associated with risk of MI. Whether prothrombotic single‐nucleotide polymorphisms (SNPs) further increase the risk of VTE in MI patients is scarcely investigated. <p><i>Aim - </i>To study the combined effect of MI and ...
    • N-Acetyl-β-D-Glucosaminidase Does Not Enhance Prediction of Cardiovascular or All-Cause Mortality by Albuminuria in a Low-Risk Population 

      Toft, Ingrid; Løchen, Maja-Lisa; Mathiesen, Ellisiv B.; Eriksen, Bjørn Odvar; Melsom, Toralf; Njølstad, Inger; Wilsgaard, Tom; Jenssen, Trond Geir (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-05)
      Albuminuria is a well known risk factor for cardiovascular disease and mortality, but focus on renal tubular dysfunction as a potential risk factor is growing also. The association between the urinary activity of N-acetyl-β-D-glucosaminidase (NAG) and cardiovascular risk has been assessed mostly in cross-sectional studies. We studied the cross-sectional associations between urinary NAG and cardiovascular ...
    • Neuropsychological functions of verbal recall and psychomotor speed significantly affect pain tolerance 

      Jacobsen, Henrik Børsting; Stubhaug, Audun; Schirmer, Henrik; Landrø, Nils Inge; Wilsgaard, Tom; Mathiesen, Ellisiv B.; Nielsen, Christopher Sivert (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-26)
      <p><i>Background - </i>Effects from cognitive performance on pain tolerance have been documented, however, sample sizes are small and confounders often overlooked. We aimed to establish that performance on neuropsychological tests was associated with pain tolerance, controlling for salient confounders. <p><i>Methods - </i>This was a cross‐sectional study nested within the Tromsø‐6 survey. ...