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Medicine

D-Index
86
Citations
25102
World Ranking
14216
National Ranking
157

Overview

Jan Frystyk is a researcher affiliated with Odense University Hospital in Denmark, specializing in Medicine with a focus on Endocrinology, Diabetes and Metabolism, Physiology, Cardiology and Cardiovascular Medicine, Epidemiology, and Molecular Biology. Their scholarly work contributes to several critical areas within these disciplines.

Their recent papers cover a range of topics in endocrinology and metabolism, including studies on growth hormone physiology and diabetes. Notable publications include:

  • Effects of carbohydrate restriction on postprandial glucose metabolism, β-cell function, gut hormone secretion, and satiety in patients with Type 2 diabetes, 2020, American Journal of Physiology-Endocrinology and Metabolism
  • Effects of testosterone therapy on constructs related to aggression in transgender men: A systematic review, 2020, Hormones and Behavior
  • Pregnancy-associated plasma proteins and Stanniocalcin-2 - Novel players controlling IGF-I physiology, 2020, Growth Hormone & IGF Research
  • Adiponectin, IGFBP-1 and -2 are independent predictors in forecasting prediabetes and type 2 diabetes, 2023, Frontiers in Endocrinology
  • Masculinising testosterone treatment and effects on preclinical cardiovascular disease, muscle strength and power, aggression, physical fitness and respiratory function in transgender men: protocol for a 10-year, prospective, observational cohort study in Denmark at the Body Identity Clinic (BIC), 2020, BMJ Open

Their frequent coauthors reflect strong collaborative work in related fields and include Sten Madsbad, Mads J. Skytte, Amirsalar Samkani, Jens J. Holst, and Steen B. Haugaard.

Jan Frystyk's publications appear often in established scientific journals and venues known for endocrinology and metabolism research. These frequent publication venues are:

  • Endocrine Abstracts
  • The Journal of Clinical Endocrinology & Metabolism
  • Frontiers in Endocrinology
  • BMJ Open
  • Diabetes

Their primary areas of research interest include:

  • Diet and metabolism studies
  • Growth Hormone and Insulin-like Growth Factors
  • Liver Disease Diagnosis and Treatment
  • Hormonal and reproductive studies
  • Diet, Metabolism, and Disease
  • Cardiovascular Function and Risk Factors
  • Metabolism, Diabetes, and Cancer

Jan Frystyk's work integrates various aspects of endocrinology and metabolism, combining molecular biology approaches with clinical insights into diabetes, cardiovascular risk, and hormonal regulation. This multidisciplinary focus supports ongoing research efforts relevant to patient care and disease understanding within these medical specialties.

Best Publications

  • Circulating levels of IGF-1 directly regulate bone growth and density

    Shoshana Yakar;Clifford J. Rosen;Wesley G. Beamer;Cheryl L. Ackert-Bicknell

  • The effects of intermittent or continuous energy restriction on weight loss and metabolic disease risk markers: a randomized trial in young overweight women

    Michelle N. Harvie;Mary Pegington;Mark P. Mattson;Jan Frystyk

  • Plasma Adiponectin, Body Mass Index, and Mortality in Patients With Chronic Heart Failure

    Caroline Kistorp;Jens Faber;Søren Galatius;Finn Gustafsson

  • Obesity and cancer risk: the role of the insulin-IGF axis.

    Andrew G. Renehan;Jan Frystyk;Allan Flyvbjerg

  • Liver-Specific igf-1 Gene Deletion Leads to Muscle Insulin Insensitivity

    Shoshana Yakar;Jun Li Liu;Ana M. Fernandez;Yiping Wu

  • Free insulin-like growth factors in human obesity

    J. Frystyk;E. Vestbo;C. Skjærbaek;C.E. Mogensen

  • Free insulin-like growth factors -- measurements and relationships to growth hormone secretion and glucose homeostasis.

    Jan Frystyk

  • Reference Intervals for Insulin-like Growth Factor-1 (IGF-I) From Birth to Senescence: Results From a Multicenter Study Using a New Automated Chemiluminescence IGF-I Immunoassay Conforming to Recent International Recommendations

    Martin Bidlingmaier;Nele Friedrich;Rebecca T. Emeny;Joachim Spranger

  • FREE INSULIN-LIKE GROWTH FACTORS (IGF-I AND IGF-II) IN HUMAN SERUM

    Jan Frystyk;Christian Skjærbæk;Bo Dinesen;Hans Ørskov

  • Circulating levels of free insulin-like growth factors in obese subjects: the impact of type 2 diabetes.

    J. Frystyk;C. Skjærbæk;E. Vestbo;S. Fisker

  • The Metabolic Syndrome Is Frequent in Klinefelter’s Syndrome and Is Associated With Abdominal Obesity and Hypogonadism

    Anders Bojesen;Kurt Kristensen;Niels H. Birkebaek;Jens Fedder

  • Non-competitive time-resolved immunofluorometric assays for determination of human insulin-like growth factor I and II.

    J Frystyk;B Dinesen;H Orskov

  • Serum Adiponectin Is a Predictor of Coronary Heart Disease: A Population-Based 10-Year Follow-Up Study in Elderly Men

    Jan Frystyk;Christian Berne;Lars Berglund;Karin Jensevik

  • Whey and casein labeled with l-[1-13C]leucine and muscle protein synthesis: effect of resistance exercise and protein ingestion

    Søren Reitelseder;Jakob Agergaard;Simon Doessing;Ida C Helmark

  • Increased serum adiponectin levels in type 1 diabetic patients with microvascular complications.

    J. Frystyk;L. Tarnow;T. Krarup Hansen;H.-H. Parving

  • Diminished growth and enhanced glucose metabolism in triple knockout mice containing mutations of insulin-like growth factor binding protein-3, -4, and -5.

    Yun Ning;Alwin G. P. Schuller;Sheri Bradshaw;Peter Rotwein

  • The current status of IGF-I assays--a 2009 update.

    Jan Frystyk;Pamela Freda;David R. Clemmons

  • Cotreatment of acromegaly with a somatostatin analog and a growth hormone receptor antagonist.

    Jens Otto Lunde Jørgensen;Ulla Feldt-Rasmussen;Jan Frystyk;Jian-Wen Chen

  • Fasting unmasks a strong inverse association between ghrelin and cortisol in serum: Studies in obese and normal-weight subjects

    Ulrick Espelund;Troels Krarup Hansen;Kurt Højlund;Henning Beck-Nielsen

  • A highly sensitive and specific assay for determination of IGF-I bioactivity in human serum

    Jian Wen Chen;Thomas Ledet;Hans Ørskov;Niels Jessen

Frequent Co-Authors

Allan Flyvbjerg
Allan Flyvbjerg Steno Diabetes Center
Hans Ørskov
Hans Ørskov Aarhus University Hospital
Jens Otto Lunde Jørgensen
Jens Otto Lunde Jørgensen Aarhus University Hospital
Niels Møller
Niels Møller Aarhus University
Jens Sandahl Christiansen
Jens Sandahl Christiansen Aarhus University Hospital
Claus Oxvig
Claus Oxvig Aarhus University
David B. Dunger
David B. Dunger University of Cambridge
Peter Rossing
Peter Rossing University of Copenhagen
Steen B. Pedersen
Steen B. Pedersen Aarhus University Hospital
Lise Tarnow
Lise Tarnow Steno Diabetes Center

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