• Bedtime Salivary Cortisol as a Screening Test for Cushing Syndrome in Children 

      Ueland, Grethe Åstrøm; Kellmann, Ralf; Davidsen, Melissa Jørstad; Viste, Kristin; Husebye, Eystein Sverre; Almås, Bjørg; Storr, Helen L.; Sagen, Jørn Vegard; Mellgren, Gunnar; Juliusson, Pétur Benedikt; Methlie, Paal (Journal article; Peer reviewed, 2021)
      Background Diagnosing Cushing syndrome (CS) can be challenging. The 24-hour urine free cortisol (UFC) measurement is considered gold standard. This is a laborious test, dependent on correct urine collection. Late-night ...
    • Characterisation of HNF1A variants in paediatric diabetes in Norway using functional and clinical investigations to unmask phenotype and monogenic diabetes 

      Svalastoga, Pernille; Kaci, Alba; Molnes, Janne; Solheim, Marie Holm; Johansson, Bente Berg; Krogvold, Lars; Skrivarhaug, Torild; Valen, Eivind; Johansson, Stefan; Molven, Anders; Sagen, Jørn Vegard; Søfteland, Eirik; Bjørkhaug, Lise; Tjora, Erling; Aukrust, Ingvild; Njølstad, Pål Rasmus (Journal article; Peer reviewed, 2023)
      Aims/hypothesis Correctly diagnosing MODY is important, as individuals with this diagnosis can discontinue insulin injections; however, many people are misdiagnosed. We aimed to develop a robust approach for determining ...
    • Evaluating the suitability of the Low Energy Availability in Females Questionnaire (LEAF-Q) for female footballers 

      Dasa, Marcus Småvik; Friborg, Oddgeir; Kristoffersen, Morten; Pettersen, Gunn; Sagen, Jørn Vegard; Sundgot-Borgen, Jorunn; Rosenvinge, Jan H (Journal article; Peer reviewed, 2023)
      Background The Low Energy Availability in Females Questionnaire (LEAF-Q) is a screening tool developed to detect endurance athletes and dancers at risk for development of persistent low energy availability (LEA) and the ...
    • The Female Menstrual Cycles Effect on Strength and Power Parameters in High-Level Female Team Athletes 

      Småvik Dasa, Marcus; Kristoffersen, Morten; Ersvær, Elisabeth; Bovim, Lars Peder Vatshelle; Bjørkhaug, Lise; Moe-Nilssen, Rolf; Sagen, Jørn Vegard; Haukenes, Inger (Journal article; Peer reviewed, 2021)
      Purpose: The female menstrual cycle (MC) is characterized by hormonal fluctuations throughout its different phases. However, research regarding its effect on athletic performance in high level athletes is sparse. The aim ...
    • Functional characterization of HNF4A gene variants identify promoter and cell line specific transactivation effects 

      Kaci, Alba; Solheim, Marie Holm; Silgjerd, Trine; Hjaltadottir, Jorunn; Hornnes, Lorentze Hope; Molnes, Janne; Madsen, Andre Greger; Sjøholt, Gry; Bellanne-Chantelot, Christine; Caswell, Richard; Sagen, Jørn Vegard; Njølstad, Pål Rasmus; Aukrust, Ingvild; Bjørkhaug, Lise (Journal article; Peer reviewed, 2024)
      Hepatocyte nuclear factor-4 alpha (HNF-4A) regulates genes with roles in glucose metabolism and β-cell development. Although pathogenic HNF4A variants are commonly associated with maturity-onset diabetes of the young (MODY1; ...
    • Impact of overweight on glucose homeostasis in MODY2 and MODY3 

      Romuld, Ingunn Bratland; Kalleklev, Tine-Lise; Molnes, Janne; Juliusson, Pétur Benedikt; Njølstad, Pål Rasmus; Sagen, Jørn Vegard (Journal article; Peer reviewed, 2021)
    • 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 ...
    • MRI adipose tissue segmentation and quantification in R (RAdipoSeg) 

      Haugen, Christine; Lysne, Vegard; Haldorsen, Ingfrid S.; Tjora, Erling; Gudbrandsen, Oddrun Anita; Sagen, Jørn Vegard; Dankel, Simon N; Mellgren, Gunnar (Journal article; Peer reviewed, 2022-10-08)
      Background: Excess adipose tissue is associated with increased cardiovascular and metabolic risk, but the volume of visceral and subcutaneous adipose tissue poses different metabolic risks. MRI with fat suppression can be ...
    • Simultaneous Quantification of Aromatase Inhibitors and Estrogens in Postmenopausal Breast Cancer Patients 

      Bertelsen, Bjørn-Erik; Viste, Kristin; Helland, Thomas; Hagland, Magnus; Søiland, Håvard; Geisler, Jürgen; Lende, Tone Hoel; Lønning, Per Eystein; Sagen, Jørn Vegard; Mellgren, Gunnar; Almås, Bjørg (Journal article; Peer reviewed, 2021)
      Context Currently there are no assays that can simultaneously quantify serum levels of the third-generation aromatase inhibitors (AIs): letrozole, anastrozole, and exemestane, and the ultra-low levels of estrogens in ...
    • Study protocol: Prevalence of low energy availability and its relation to health and performance among female football players 

      Rosenvinge, Jan H; Dasa, Marcus Småvik; Kristoffersen, Morten; Pettersen, Gunn; Sundgot-Borgen, Jorunn; Sagen, Jørn Vegard; Friborg, Oddgeir (Journal article; Peer reviewed, 2022)
      Enduring low energy availability (LEA) is associated with several potentially serious physiological and mental conditions. LEA has been found highly prevalent among female elite athletes within endurance sports, thus ...