Blar i forfatter "Flote, Vidar Gordon"

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    • Alcohol consumption, endogenous estrogen and mammographic density among premenopausal women 

      Frydenberg, Hanne; Flote, Vidar Gordon; Larsson, Ine Marie; Barrett, Emily S.; Furberg, Anne-Sofie; Ursin, Giske; Wilsgaard, Tom; Ellison, Peter; McTiernan, Anne; Hjartåker, Anette; Jasienska, Grazyna; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-07)
      Introduction: Alcohol consumption may promote aromatization of androgens to estrogens, which may partly explain the observations linking alcohol consumption to higher breast cancer risk. Whether alcohol consumption is associated with endogenous estrogen levels, and mammographic density phenotypes in premenopausal women remains unclear.<p> <p>Methods: Alcohol consumption was collected by self-report ...

    • Dietary changes in early-stage breast cancer patients from pre-surgery and over the 12 months post-surgery 

      Brunvoll, Sonja Hjellegjerde; Thune, Inger; Bertheussen, Gro Falkener; Fjeldheim, Frøydis Nyborg; Flote, Vidar Gordon; Frydenberg, Hanne; Lundgren, Steinar; Skjerven, Helle; Lømo, Jon; Fagerland, Morten; McTiernan, Anne; Schlichting, Ellen; Hjartåker, Anette (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-19)
      The time after a breast cancer diagnosis is a potential period for making positive dietary changes, but previous results are conflicting. The main aim of the present study was to study breast cancer patients’ dietary changes during the 12 months post-surgery and from 12 months pre-surgery to 12 months post-surgery with repeated administration of a 7-d pre-coded food diary and an FFQ, respectively. ...

    • Exploring the effects of lifestyle on breast cancer risk, age at diagnosis, and survival: the EBBA-Life study 

      Lofterød, Trygve; Frydenberg, Hanne; Flote, Vidar Gordon; Eggen, Anne Elise; McTiernan, A; Mortensen, Elin Synnøve; Akslen, Lars A.; Reitan, J. B.; Wilsgaard, Tom; Inger, Thune (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-20)
      <i>Purpose</i> - Whether an unfavorable lifestyle not only affects breast cancer risk, but also influences age at onset of breast cancer and survival, is under debate.<br><br> <i>Methods</i> - In a population-based cohort, the Energy Balance and Breast Cancer Aspects throughout life (EBBA-Life) study, a total of 17,145 women were included. During follow-up, 574 women developed invasive breast cancer. ...

    • Gene variations in oestrogen pathways, CYP19A1 , daily 17ß-estradiol and mammographic density phenotypes in premenopausal women. 

      Flote, Vidar Gordon; Furberg, Anne-Sofie; McTiernan, Anne; Frydenberg, Hanne; Ursin, Giske; Iversen, Anita; Lofterød, Trygve; Ellison, Peter T.; Wist, Erik; Egeland, Thore; Wilsgaard, Tom; Makar, Karen W; Chang-Claude, Jenny; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-12-19)

    • Genetic Polymorphism CYP17 rs2486758 and Metabolic Risk Factors Predict Daily Salivary 17 beta-Estradiol Concentration in Healthy Premenopausal Norwegian Women. The EBBA-I Study 

      Iversen, Anita; Thune, Inger; McTiernan, Anne; Makar, Karen W; Wilsgaard, Tom; Ellison, Peter T.; Jasienska, Grazyna; Flote, Vidar Gordon; Poole, Elizabeth M; Furberg, Anne-Sofie (Journal article; Tidsskriftartikkel; Peer reviewed, 2012-03-14)
      Context: The relationship between low-penetrance genes, metabolic risk factors, and levels of endogenous 17β-estradiol and progesterone, which play a role in breast cancer risk, remains unclear. <br>Objective: The aim of this study was to determine whether common polymorphisms in CYP17, in combination with metabolic risk factors (individually or clustered), alter salivary concentrations of free ...

    • Lipoprotein subfractions by nuclear magnetic resonance are associated with tumor characteristics in breast cancer 

      Flote, Vidar Gordon; Vettukattil, Muhammad Riyas; Bathen, Tone Frost; Egeland, Thore; McTiernan, Anne; Frydenberg, Hanne; Husøy, Anders; Finstad, Sissi Espetvedt; Lømo, Jon; Garred, Øystein; Schlichting, Ellen; Wist, Erik; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-08)
      <b>Background:</b> High-Density Lipoprotein (HDL)-cholesterol, has been associated with breast cancer development, but the association is under debate, and whether lipoprotein subfractions is associated with breast tumor characteristics remains unclear.<br> <b>Methods:</b> Among 56 women with newly diagnosed invasive breast cancer stage I/II, aged 35–75 years, pre-surgery overnight fasting serum ...

    • Metabolite and lipoprotein responses and prediction of weight gain during breast cancer treatment 

      Madssen, Torfinn Støve; Thune, Inger; Flote, Vidar Gordon; Lundgren, Steinar; Bertheussen, Gro Falkener; Frydenberg, Hanne; Wist, Erik; Schlichting, Ellen; Schäfer, Hartmut; Fjøsne, Hans Erikssønn; Vettukattil, Muhammad Riyas; Lømo, Jon; Bathen, Tone Frost; Giskeødegård, Guro F. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-07)
      <p><i>Background</i>: Breast cancer treatment has metabolic side effects, potentially affecting risk of cardiovascular disease (CVD) and recurrence. We aimed to compare alterations in serum metabolites and lipoproteins during treatment between recipients and non-recipients of chemotherapy, and describe metabolite profiles associated with treatment-related weight gain.</p> <p><i>Methods</i>: This ...

    • Normal and unusual days for dietary intake during the 12 months after a breast cancer diagnosis in women 

      Brunvoll, Sonja Hjellegjerde; Flote, Vidar Gordon; Halset, Eline Holli; Bertheussen, Gro Falkener; Skjerven, Helle; Lømo, Jon; Thune, Inger; Hjartåker, Anette (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-24)
      Purpose There are several reasons to report days as being unusual with regard to dietary intake, including special occasions and celebrations. For breast cancer patients during the 12 month post-surgery period, unusual days may also include days that are afected by being a cancer patient. The aim of this study was to study dietary intake on “normal” and “unusual” days, and to study what is reported ...

    • Ovarian hormones and reproductive risk factors for breast cancer in premenopausal women : the Norwegian EBBA-I study 

      Iversen, Anita; Thune, Inger; McTiernan, Anne; Emaus, Aina; Finstad, Sissi Espetvedt; Flote, Vidar Gordon; Wilsgaard, Tom; Lipson, Susan; Ellison, Peter T; Jasienska, Grazyna; Furberg, Anne-Sofie (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Ovarian hormones, parity and length of ‘menarche-to-first birth’ time interval are known risk factors for breast cancer, yet the associations between 17β-estradiol, progesterone and these reproductive factors remain unclear. A total of 204 women (25–35 years) who participated in the Norwegian EBBA-I study collected daily saliva samples for one complete menstrual cycle, and filled in a reproductive ...

    • Polymorphisms in the estrogen receptor alpha gene (ESR1), daily cycling estrogen and mammographic density phenotypes 

      Fjeldheim, Frøydis Nyborg; Frydenberg, Hanne; Flote, Vidar Gordon; McTiernan, Anne; Furberg, Anne-Sofie; Ellison, Peter T.; Barrett, Emily S.; Wilsgaard, Tom; Jasienska, Grazyna; Ursin, Giske; Wist, Erik; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-07)
      Background: Single nucleotide polymorphisms (SNPs) involved in the estrogen pathway and SNPs in the estrogen receptor alpha gene (ESR1 6q25) have been linked to breast cancer development, and mammographic density is an established breast cancer risk factor. Whether there is an association between daily estradiol levels, SNPs in ESR1 and premenopausal mammographic density phenotypes is unknown. Methods: ...

    • Validation of repeated self-reported n-3 PUFA intake using serum phospholipid fatty acids as a biomarker in breast cancer patients during treatment 11 Medical and Health Sciences 1112 Oncology and Carcinogenesis 

      Brunvoll, Sonja Hjellegjerde; Thune, Inger; Frydenberg, Hanne; Flote, Vidar Gordon; Bertheussen, Gro Falkener; Schlichting, Ellen; Bjerve, Kristian S; Hjartåker, Anette (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      <p><i>Background</i>: The role of n-3 polyunsaturated fatty acids (PUFAs) in breast cancer is not clear and under debate. To explore this relationship it is important to have proper validated dietary assessment methods for measuring the intake of n-3 PUFAs. The aim of the current study is to validate two different methods used to assess the intake of selected n-3 PUFAs as well as food sources of ...