hrp0094p2-21 | Adrenals and HPA Axis | ESPE2021

The reliability of Salivary Cortisol compared to Serum Cortisol for diagnosing adrenal insufficiency in the gold standard ACTH stimulation test in children

Ciancia Silvia , van den Berg Sjoerd A.A. , van den Akker Erica L.T. ,

Introduction: The gold standard for the diagnosis of adrenal insufficiency (AI) is the ACTH stimulation test. According to the guidelines approved by the European Endocrine Society, the ACTH stimulation test should be performed with the administration of the standard dose of i.v. Synachten® 250 µg for adults and children aged ≥ 2 years (infants should receive 15 µg/kg, children ≤ 2 years 125 µg). In many clinical settings a Syna...

hrp0098fc11.6 | Fat, Metabolism and Obesity 2 | ESPE2024

Poly- and Perfluoroalkyl substances (PFAS) levels and breastfeeding have opposite associations with growth and body composition at age 3 years

van Beijsterveldt Inge , Dorrepaal Demi , van Zelst Bertrand , van den Berg Sjoerd , Hokken-Koelega Anita

Background and aims: Poly- and perfluoroalkyl substances (PFAS) are non-degradable, man-made-chemicals. PFAS are considered to be ‘Endocrine Disrupting Chemicals’ (EDCs), a group of chemicals which have been reported to interfere with endocrine processes and cause adverse effects on perinatal, neurodevelopmental, metabolic and reproductive outcomes. Especially when exposure occurs during susceptible periods of human development, such as early life....

hrp0092p1-367 | GH and IGFs (2) | ESPE2019

Normal IGF-Bioactivity and Low Free IGF-I in Patients with Prader-Willi Syndrome with High Total Serum IGF-I: Immunoreactive IGF-I Concentration Poorly Reflects IGF Bio-Activity and Bio-Availability.

Elizabeth Melitza , Donze Stephany , Pellikaan Karlijn , van den Berg Sjoerd , van Doorn Jaap , Peeters Robin P. , Hokken-Koelega Anita C.S. , de Graaff Laura C.G.

Introduction: Recombinant Growth Hormone (GH) has changed the lives of many patients with Prader-Willi Syndrome (PWS). GH treatment has beneficial effects on body composition, physical performance, cognition, psychomotor development, respiratory function and quality of life of patients with PWS. Due to the narrow therapeutic range, GH treatment is subject to strict limits. Clinicians measure serum immunoreactive Insulin-like Growth Factor 1 ('total IGF-I&#...

hrp0097rfc8.2 | Fat, metabolism and obesity 2 | ESPE2023

Acute rise of leptin after five days of dexamethasone and its association with hunger, fat mass, sleep and fatigue, in children with acute lymphoblastic leukemia

van Hulst Annelienke , Verwaaijen Emm , van den Berg Sjoerd , van Litsenburg Raphaele , Grootenhuis Martha , Fiocco Marta , Neggers Sebastian , van den Heuvel-Eibrink Marry , van den Akker Erica

Background & Aims: Children with acute lymphoblastic leukemia (ALL) frequently receive high doses dexamethasone during treatment, which may induce acute side effects. The aims of the current study were to determine the influence of a five-day dexamethasone course on changes in leptin, fat mass, body mass index (BMI), hunger, sleep and fatigue and to explore the associations between these changes.Methods: Pediatric AL...

hrp0092p1-7 | Adrenals and HPA Axis | ESPE2019

Influence of Internal Standards Choice on Quantification of 17α-hydroxyprogesterone (17OHP) Using Mass Spectrometric Based Methods

Greaves Ronda , Hartmann Michaela F. , Zakaria Rosita , Shun Ho Chung , de Rijke Yolanda B. , van den Berg Sjoerd , Cooke Brian , Hoad Kirsten , Graham Peter , Davies Stephen , Mackay Lindsey , Ping Loh Tze , Wudy Stefan A.

Objective: This project aims to evaluate the effect of two isotopically labelled internal standards on the quantification of 17OHP by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS) as an orthogonal technique.Methods: Three LC-MS/MS and one GC-MS/MS laboratories, spanning four countries worldwide, who routinely measure serum17OHP, compared two internal ...

hrp0092p1-158 | Adrenals and HPA Axis (1) | ESPE2019

Influence of Internal Standards Choice on Quantification of 17α-hydroxyprogesterone (17OHP) Using Mass Spectrometric Based Methods

Greaves Ronda , Hartmann Michaela F. , Zakaria Rosita , Ho Chug Shun , de Rijke Yolanda B. , van den Berg Sjoerd , Cooke Brian , Hoad Kirsten , Graham Peter , Davies Stephen , Mackay Lindsay , Loh Tze Ping , Wudy Stefan A.

Objective: This project aims to evaluate the effect of two isotopically labelled internal standards on the quantification of 17OHP by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS) as an orthogonal technique.Methods: Three LC-MS/MS and one GC-MS/MS laboratories, spanning four countries worldwide, who routinely measure serum17OHP, compared two internal ...