Browsing Bergen Open Research Archive by Author "Mellgren, Gunnar"

Now showing items 21-40 of 67

    • Effects of high intake of cod or salmon on gut microbiota profile, faecal output and serum concentrations of lipids and bile acids in overweight adults: a randomised clinical trial 

      Bratlie, Marianne; Hagen, Ingrid Valheim; Helland, Anita; Erchinger, Friedemann Georg; Midttun, Øivind; Ueland, Per Magne; Rosenlund, Grethe; Sveier, Harald; Mellgren, Gunnar; Hausken, Trygve; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2020-10-27)
      Purpose To explore whether high intake of cod or salmon would affect gut microbiota profile, faecal output and serum concentrations of lipids and bile acids. Methods Seventy-six adults with overweight/obesity with no ...

    • Efficacy of adrenal venous sampling is increased by point of care cortisol analysis 

      Viste, Kristin; Grytaas, Marianne Aardal; Jørstad, Melissa; Jøssang, Dag Eirik; Høyden, Eivind Næss; Fotland, Solveig Simmenes; Jensen, Dag Kjartan; Løvås, Kristian; Thordarson, Hrafnkell B; Almås, Bjørg; Mellgren, Gunnar (Peer reviewed; Journal article, 2013)
      Primary aldosteronism (PA) is a common cause of secondary hypertension and is caused by unilateral or bilateral adrenal disease. Treatment options depend on whether the disease is lateralized or not, which is preferably ...

    • Energy intake, nutritional status and weight reduction in patients one year after laparoscopic sleeve gastrectomy 

      Gjessing, Hanne Rosendahl; Nielsen, Hans Jørgen; Mellgren, Gunnar; Gudbrandsen, Oddrun Anita (Peer reviewed; Journal article, 2013-07-30)
      Background: Laparoscopic sleeve gastrectomy (LSG) is increasingly popular due to its efficiency in reducing excess weight, however little is known about the nutritional status in patients after surgery. Purpose: To investigate ...

    • Five salmon dinners per week were not sufficient to prevent the reduction in serum vitamin D in autumn at 60° north latitude: A randomised trial 

      Bratlie, Marianne; Hagen, Ingrid Valheim; Helland, Anita; Midttun, Øivind; Ulvik, Arve; Rosenlund, Grethe; Sveier, Harald; Mellgren, Gunnar; Ueland, Per Magne; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2020)
      Low serum concentrations of several vitamins have been linked to increased risk of diseases including insulin resistance and type 2 diabetes (T2D). Fish is a good source of several vitamins, and the prevalence of T2D is ...

    • Generating a Precision Endoxifen Prediction Algorithm to Advance Personalized Tamoxifen Treatment in Patients with Breast Cancer 

      Helland, Thomas; Alsomairy, Sarah; Lin, Chenchia; Søiland, Håvard; Mellgren, Gunnar; Hertz, Daniel Louis (Journal article; Peer reviewed, 2021)
      Tamoxifen is an endocrine treatment for hormone receptor positive breast cancer. The effectiveness of tamoxifen may be compromised in patients with metabolic resistance, who have insufficient metabolic generation of the ...

    • Gruppeveiledning av doktorgradstipendiater i en forskningsgruppe 

      Mellgren, Gunnar (UPED-skrift nr. ?/2006, Working paper, 2006)
      Formålet med denne studien var å stimulere den vitenskapelige kommunikasjonen mellom forskningsgruppens medlemmer, samt å forbedre og effektivisere forskningsveiledningen. En sentral problemstilling var om det er mulig å ...

    • High visceral fat percentage is associated with poor outcome in endometrial cancer 

      Mauland, Karen Klepsland; Eng, Øyvin Andre Solberg; Ytre-Hauge, Sigmund; Tangen, Ingvild Løberg; Berg, Anna; Salvesen, Helga; Salvesen, Øyvind; Krakstad, Camilla; Trovik, Jone; Høivik, Erling Andre; Werner, Henrica Maria Johanna; Mellgren, Gunnar; Haldorsen, Ingfrid S. (Peer reviewed; Journal article, 2017-10-19)
      Despite evidence of increased endometrial cancer (EC) risk in obese women, the impact of obesity on clinical and histological phenotype is poorly understood. This study explored abdominal fat volumes and fat distribution ...

    • High-fat diet impact on intestinal cholesterol conversion by the microbiota and serum cholesterol levels 

      Bubeck, Alena M.; Urbain, Paul; Horn, Cathrine; Jung, Anna S.; Ferrari, Lisa; Ruple, Hannah K.; Podlesny, Daniel; Zorn, Stefanie; Laupsa-Borge, Johnny; Jensen, Caroline; Lindseth, Inge Andreas; Lied, Gülen Arslan; Dierkes, Jutta; Mellgren, Gunnar; Bertz, Hartmut; Matysik, Silke; Krautbauer, Sabrina; Liebisch, Gerhard; Schoett, Hans-Frieder; Dankel, Simon N; Fricke, W. Florian (Journal article; Peer reviewed, 2023)
      Cholesterol-to-coprostanol conversion by the intestinal microbiota has been suggested to reduce intestinal and serum cholesterol availability, but the relationship between intestinal cholesterol conversion and the gut ...

    • Hormone references for ultrasound breast staging and endocrine profiling to detect female onset of puberty 

      Madsen, Andre; Bruserud, Ingvild Særvold; Bertelsen, Bjørn-Erik; Roelants, Mathieu; Oehme, Ninnie; Viste, Kristin; Bjerknes, Robert; Almås, Bjørg; Rosendahl, Karen; Mellgren, Gunnar; Sagen, Jørn V.; Juliusson, Petur Benedikt (Journal article; Peer reviewed, 2020)
      Context Application of ultrasound (US) to evaluate attainment and morphology of glandular tissue provides a new rationale for evaluating onset and progression of female puberty, but currently no hormone references complement ...

    • Impaired Adipocyte SLC7A10 Promotes Lipid Storage in Association With Insulin Resistance and Altered BCAA Metabolism 

      Jersin, Regine Åsen; Tallapragada, Divya Sri; Skartveit, Linn; Bjune, Mona Synnøve; Muniandy, Maheswary; Lee-Ødegård, Sindre; Heinonen, Sini; Alvarez, Marcus; Birkeland, Kåre Inge; Drevon, Christian André; Pajukanta, Päivi; McCann, Adrian; Pietiläinen, Kirsi H.; Claussnitzer, Melina; Mellgren, Gunnar; Dankel, Simon N (Journal article; Peer reviewed, 2023)
      Context The neutral amino acid transporter SLC7A10/ASC-1 is an adipocyte-expressed gene with reduced expression in insulin resistance and obesity. Inhibition of SLC7A10 in adipocytes was shown to increase lipid accumulation ...

    • Importance of endocrine treatment adherence and persistence in breast cancer survivorship: a systematic review 

      Eliassen, Finn; Blåfjelldal, Vibeke; Helland, Thomas; Hjorth, Cathrine Fonnesbech; Hølland, Kari; Lode, Lise; Bertelsen, Bjørn-Erik; Janssen, Emiel; Mellgren, Gunnar; Kvaløy, Jan Terje; Søiland, Håvard; Lende, Tone Hoel (Journal article; Peer reviewed, 2023)
      Purpose Adjuvant endocrine treatment is essential for treating luminal subtypes of breast cancer, which constitute 75% of all breast malignancies. However, the detrimental side effects of treatment make it difficult for ...

    • Inflammatory markers, the tryptophan-kynurenine pathway, and Vitamin B status after bariatric surgery 

      Christensen, Monika; Fadnes, Dag Jone Stokke; Røst, Therese Halvorsen; Pedersen, Eva Ringdal; Andersen, John Roger; Våge, Villy; Ulvik, Arve; Midttun, Øivind; Ueland, Per Magne; Nygård, Ottar; Mellgren, Gunnar (Peer reviewed; Journal article, 2018-02-05)
      Objective: Obesity is associated with increased inflammation and insulin resistance. In conditions with chronic immune activation, low plasma vitamin B6-levels are described, as well as an increased kynurenine:tryptophan-ratio ...

    • Intake of baked cod fillet resulted in lower serum cholesterol and higher long chain n-3 PUFA concentrations in serum and tissues in hypercholesterolemic obese Zucker fa/fa rats 

      Vikøren, Linn Anja Slåke; Drotningsvik, Aslaug; Bergseth, Marthe Tønder; Mjøs, Svein Are; Austgulen, Maren Hoff; Mellgren, Gunnar; Gudbrandsen, Oddrun Anita (Peer reviewed; Journal article, 2018-06-28)
      Increasing evidence indicates that lean fish consumption may benefit cardiovascular health. High cholesterol and low n-3 PUFA concentrations in serum are associated with an increased risk of coronary heart disease; therefore, ...

    • Long-term impact of gastropexy on use of acid-reducing medication, second operations for gastroesophageal reflux and subjective reflux symptoms after sleeve gastrectomy 

      Flølo, Tone Nygaard; Fosså, Alexander; Nedkvitne, Jonas Ingolf Petersson; Waage, Jo Erling Riise; Rekdal, Magne; Dankel, Simon N; Fernø, Johan; Mellgren, Gunnar; Nedrebø, Bjørn Gunnar (Journal article; Peer reviewed, 2023)
      We investigated whether adding gastropexy to sleeve gastrectomy (SG) reduced gastroesophageal reflux disease (GERD) in patients operated for severe obesity, assessed mainly by use of anti-reflux medication (ARM) and second ...

    • Low Z-4OHtam concentrations are associated with adverse clinical outcome among early stage premenopausal breast cancer patients treated with adjuvant tamoxifen 

      Helland, Thomas; Naume, Bjørn; Hustad, Steinar; Bifulco, Ersilia; Kvaløy, Jan Terje; Sætersdal, Anna Barbro; Synnestvedt, Marit; Lende, Tone Hoel; Gilje, Bjørnar; Mjaaland, Ingvil; Weyde, Kjetil; Blix, Egil Støre; Wiedswang, Gro; Borgen, Elin; Hertz, Daniel Louis; Janssen, Emiel; Mellgren, Gunnar; Søiland, Håvard (Journal article; Peer reviewed, 2021)
      Low steady‐state levels of active tamoxifen metabolites have been associated with inferior treatment outcomes. In this retrospective analysis of 406 estrogen receptor‐positive breast cancer (BC) patients receiving adjuvant ...

    • Low β2-adrenergic receptor level may promote development of castration resistant prostate cancer and altered steroid metabolism 

      Braadland, Peder; Grytli, Helene Hartvedt; Ramberg, Håkon Andre; Katz, Betina; Kellmann, Ralf; Gauthier-Landry, louis; Fazli, Ladan; Krobert, Kurt Allen; Wang, Wanzhong; Levy, Finn Olav; Bjartell, Anders; Berge, Viktor; Rennie, Paul S.; Mellgren, Gunnar; Mælandsmo, Gunhild; Svindland, Aud; Barbier, Olivier; Tasken, Kristin Austlid (Peer reviewed; Journal article, 2016-12-04)
      The underlying mechanisms responsible for the development of castration-resistant prostate cancer (CRPC) in patients who have undergone androgen deprivation therapy are not fully understood. This is the first study to ...

    • Maternal PCOS status and metformin in pregnancy: Steroid hormones in 5–10 years old children from the PregMet randomized controlled study 

      Hanem, Liv Guro Engen; Salvesen, Øyvind; Madsen, Andre; Sagen, Jørn Vegard; Mellgren, Gunnar; Juliusson, Petur Benedikt; Carlsen, Sven Magnus; Vanky, Eszter; Ødegård, Rønnaug (Journal article; Peer reviewed, 2021)
      Objective: Polycystic ovary syndrome (PCOS) is a common endocrine disorder, with potential effects on offspring both genetically and through altered intrauterine environment. Metformin, which ameliorate hormonal disturbances ...

    • Meal patterns associated with energy intake in people with obesity 

      Horn, Cathrine; Laupsa-Borge, Johnny; Andersen, Amanda; Dyer, Laurence; Revheim, Ingrid; Leikanger, Trine; Næsheim, Nicole Tandrevold; Storås, Inghild; Johannessen, Kristine Kjerpeseth; Mellgren, Gunnar; Dierkes, Jutta; Dankel, Simon N (Journal article; Peer reviewed, 2022)
      It is widely assumed that people with obesity have several common eating patterns, including breakfast-skipping (1), eating during the night (2) and high fast-food consumption (3). However, differences in individual meal ...

    • Metabolic and Epigenetic Regulation by Estrogen in Adipocytes 

      Bjune, Jan-Inge; Strømland, Pouda Panahandeh; Jersin, Regine Åsen; Mellgren, Gunnar; Dankel, Simon N (Journal article; Peer reviewed, 2022-02-22)
      Sex hormones contribute to differences between males and females in body fat distribution and associated disease risk. Higher concentrations of estrogens are associated with a more gynoid body shape and with more fat storage ...

    • Metabolic role of the hepatic valine/3-hydroxyisobutyrate (3-HIB) pathway in fatty liver disease 

      Bjune, Mona Synnøve; Dyer, Laurence; Laupsa-Borge, Johnny; Sommersten, Cathrine Horn; McCann, Adrian; Glastad, Robert Clay; Johnston, Iain; Kern, Matthias; Blüher, Matthias; Mellgren, Gunnar; Dankel, Simon N (Journal article; Peer reviewed, 2023)
      Background: The valine (branched-chain amino acid) metabolite 3-hydroxyisobutyrate (3-HIB), produced by 3-Hydroxyisobutyryl-CoA Hydrolase (HIBCH), is associated with insulin resistance and type 2 diabetes, but implicated ...