• 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 ...
    • Birth Weight, Breast Cancer and the Potential Mediating Hormonal Environment 

      Bukowski, Radek; Chlebowski, Rowan; Thune, Inger; Furberg, Anne-Sofie; Hankins, Gary; Malone, Fergal; D'Alton, Mary (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Previous studies have shown that woman’s risk of breast cancer in later life is associated with her infants birth weights. The objective of this study was to determine if this association is independent of breast cancer risk factors, mother’s own birth weight and to evaluate association between infants birth weight and hormonal environment during pregnancy. Independent association would have ...
    • Body mass index and survival in women with breast cancer—systematic literature review and meta-analysis of 82 follow-up studies 

      Chan, Doris S.M.; Vieira, A.; Aune, Dagfinn; Bandera, Elisa V.; Greenwood, D; McTiernan, A; Rosenblatt, D. Navarro; Thune, Inger; Vieira, R; Norat, T (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-04-27)
      Background: Positive association between obesity and survival after breast cancer was demonstrated in previous meta-analyses of published data, but only the results for the comparison of obese versus non-obese was summarised.<p> <p>Methods: We systematically searched in MEDLINE and EMBASE for follow-up studies of breast cancer survivors with body mass index (BMI) before and after diagnosis, and ...
    • 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. ...
    • Duration of Lactation, Maternal Metabolic Profile, and Body Composition in the Norwegian EBBA I-Study 

      Tørris, Christine; Thune, Inger; Emaus, A; Finstad, SE; Bye, Asta; Furberg, AS; Barrett, Emily S.; Jasienska, G; Ellison, P; Hjartåker, Anette (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      There is conflicting evidence as to whether duration of lactation may decrease the risk of subsequent development of an unfavorable maternal metabolic profile, including overweight and obesity. We hypothesized that duration of lactation is associated with a more favorable metabolic profile and healthier anthropometric measurements. Ninety-eight parous women were studied from the Norwegian EBBAI-study ...
    • Expression of miR-24-1-5p in Tumor Tissue Influences Prostate Cancer Recurrence: The PROCA-life Study 

      Stikbakke, Einar; Wilsgaard, Tom; Haugnes, Hege Sagstuen; Pedersen, Mona Irene; Knutsen, Tore; Støyten, Martin; Giovannucci, Edward; Eggen, Anne Elise; Thune, Inger; Richardsen, Elin (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-23)
      The role of miR-24-1-5p and its prognostic implications associated with prostate cancer are mainly unknown. In a population-based cohort, the Prostate Cancer Study throughout life (PROCA-life), all men had a general health examination at study entry and were followed between 1994 and 2016. Patients with available tissue samples after a prostatectomy with curative intent were identified (n = 189). ...
    • 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 ...
    • Impact of pre-diagnostic triglycerides and HDL-cholesterol on breast cancer recurrence and survival by breast cancer subtypes 

      Lofterød, Trygve; Mortensen, Elin Synnøve; Nalwoga, Hawa; Wilsgaard, Tom; Frydenberg, Hanne; Risberg, Terje; Eggen, Anne Elise; McTiernan, Anne; Aziz, Sura Mohammed; Wist, Erik; Stensvold, Andreas; Reitan, Jon Brinchmann; Akslen, Lars A.; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-15)
      <i>Background</i>: High triglycerides and low levels of high density lipoprotein (HDL)-cholesterol are observed to promote tumor growth. However, whether breast cancer heterogeneity may explain the contradictory influence of triglycerides and cholesterol observed on breast cancer prognosis remains unclear.<p> <p><i>Methods</i>: A population-based survival study among 464 breast cancer cases ...
    • Inflammation of mammary adipose tissue occurs in overweight and obese patients exhibiting early-stage breast cancer 

      Vaysse, Charlotte; Lømo, Jon; Garred, Øystein; Fjeldheim, Frøydis Nyborg; Lofterød, Trygve; Schlichting, Ellen; McTiernan, Anne; Frydenberg, Hanne; Husøy, Anders; Lundgren, Steinar; Fagerland, Morten W; Richardsen, Elin; Wist, Erik; Muller, Catherine; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-03)
      Growing evidence indicates that adiposity is associated with breast cancer risk and negatively affects breast cancer recurrence and survival, a paracrine role of mammary adipose tissue being very likely in this process. In contrast to other adipose depots, occurrence of a sub-inflammatory state of mammary adipose tissue defined by dying adipocytes surrounded by macrophages forming crown-like structures ...
    • Inflammatory serum markers and risk and severity of prostate cancer: The PROCA‐life study 

      Stikbakke, Einar; Richardsen, Elin; Knutsen, Tore; Wilsgaard, Tom; Giovannucci, Edward L; McTiernan, Anne; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-03)
      Whether chronic inflammation mirrored by high levels of systemic inflammatory markers such as high sensitive‐CRP (hs‐CRP) and white blood cell count (WBC) are associated with prostate cancer development remains unclear. In the Prostate Cancer Study throughout Life (PROCA‐<i>life</i>), a prospective population‐based cohort study, 7,356 men were included. Prediagnostic WBC and hs‐CRP were assessed ...
    • The influence of metabolic factors and ethnicity on breast cancer risk, treatment and survival: The Oslo ethnic breast cancer study 

      Lofterød, Trygve; Frydenberg, Hanne; Veierød, Marit Bragelien; Jenum, Anne Karen; Reitan, Jon Brinchmann; Wist, Erik; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-29)
      Background - Breast cancer risk remains higher in high-income compared with low-income countries. However, it is unclear to what degree metabolic factors influence breast cancer development in women 30 years after immigration from low- to a high-incidence country.<p> <p>Methods - Using Cox regression models, we studied the association between pre-diagnostic metabolic factors and breast cancer ...
    • Joint effect of particulate matter and cigarette smoke on women’s sex hormones 

      Merklinger-Gruchala, Anna; Jasienska, Grazyna; Thune, Inger; Kapiszewska, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-08)
      Background - Although relationships between exposure to air pollution and reproductive health are broadly studied, mechanisms behind these phenomena are still unknown. The aim of the study was to assess whether exposure to particulate matter (PM10) and tobacco smoking have an impact on menstrual profiles of 17β-estradiol (E2) and progesterone (P) and the E2/P ratio.<p> <p>Methods - Levels of sex ...
    • 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 ...
    • Obesity and Staphylococcus aureus Nasal Colonization among Women and Men in a General Population 

      Olsen, Karina; Danielsen, Kjersti; Wilsgaard, Tom; Sangvik, Maria; Sollid, Johanna U. Ericson; Thune, Inger; Eggen, Anne Elise; Simonsen, Gunnar Skov; Furberg, Anne-Sofie (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Background: Obesity and diabetes mellitus (DM) have been linked to increased risk of infections, and Staphylococcus aureus nasal colonization is a major risk factor for developing infections with the microbe. We therefore sought to find whether body mass index (BMI) and waist circumference (WC) could be associated with S. aureus colonization independent of DM. Methodology: S. aureus colonization ...
    • 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 ...
    • Physical activity and risk of cancer : a population based cohort study including prostate, testicular, colorectal, lung and breast cancer 

      Thune, Inger (Doctoral thesis; Doktorgradsavhandling, 1997)
      The overall aim of this thesis was to elucidate any association between physical activity and the subsequent risk of some major types of cancer in the general adult population of Norway: prostate, testicular, colorectal, lung and breast cancer. <p> <p>• Another aim was to examine whether physical activity at work had a different association to these cancer types than physical activity in leisure ...
    • 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: ...