hrp0092rfc11.6 | Pituitary, Neuroendocrinology and Puberty Session 2 | ESPE2019

Final Height Reduction in Transgender Adolescent Girls: A Case Series

Hellinga Ilse , Wiepjes Chantal , Vink Denise , Rotteveel Joost , Klink Daniel

Background: Transgirls (female-identifying adolescents assigned male at birth) can be treated with GnRH (gonadotropin releasing hormone analogs) followed by the addition of estrogens.Recently in a small cohort of 25 transgirls their average final height was reported to be +1.9 SDS (standard deviation score) calculated for adult Dutch females.High dosage estrogens can be used to stimulate bone maturation, thereb...

hrp0084p2-537 | Puberty | ESPE2015

Increased Ambulatory Blood Pressure in Adolescents with Gender Dysphoria Treated with Gonadotropin- Releasing Hormone Analogues

Klink Daniel , Bokenkamp Arend , Atsma Eline , Rotteveel Joost

Background: Adolescents with gender dysphoria (GD) are treated with gonadotropin-releasing hormone analogues (GnRHa) to prevent the development of characteristics of the undesired sex. Subsequently, sex steroids of the desired sex, cross sex hormones (CSH) are added. GnRHa treatment is generally considered to be safe in the treatment of precocious puberty in children. However, we observed that some adolescents with GD developed hypertension during GnRHa monotherapy (Klink D <e...

hrp0089rfc1.1 | Adrenals &amp; HPA Axis | ESPE2018

The Relative Contributions of Genetic and Environmental Factors on Cortisol Metabolism at Pre-, Mid- and Post-Pubertal Ages

van Keulen Britt , Dolan Conor , Andrew Ruth , Walker Brian , Boomsma Dorret , Rotteveel Joost , Finken Martijn

Background: Inter-individual differences in the metabolism of cortisol have been postulated to emerge during puberty, and might be explained by a complex interplay of genetic and environmental factors. The aim of the current study was to estimate the relative contributions of genetic, shared environmental, and unshared environmental factors on cortisol metabolism in a longitudinal twin cohort assessed at pre-pubertal, mid-pubertal and post-pubertal ages....

hrp0089rfc8.6 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology | ESPE2018

Metabolic Profile of Young Adult Transgender Persons Who Started Gender Affirming Treatment in their Adolescence

Klaver Maartje , de Mutsert Renee , Wiepjes Chantal , den Heijer Martin , Rotteveel Joost , Klink Daniel

Purpose: Transgender adolescents are treated with gonadotropin-releasing hormone analogues (GnRHa), followed by the addition of gender-affirming hormones. Since during puberty the body reaches maturation, concerns have been risen that the treatment may have negative outcome later in life. The aim of this study is to determine whether treatment with GnRHa and subsequent addition of hormones results in a more atherogenic profile than peers at the age of 22.<p class="abstext"...

hrp0086p1-p3 | Adrenal P1 | ESPE2016

Gender-Specific Differences in Hypothalamus–Pituitary–Adrenal Axis Activity in Children: A Meta-Analysis

van der Voorn Bibian , Hollanders Jonneke , Ket Johannes , Rotteveel Joost , Finken Martijn

Background: Differences in hypothalamus–pituitary–adrenal (HPA-)axis functioning have been proposed to underlie gender-specific cardiovascular and neurocognitive disease susceptibility.Objective and hypotheses: We conducted a systematic review and meta-analysis to test the hypothesis that gender-specific differences in HPA-axis activity are already present in childhood.Method: We searched two electronic databases (PubMed ...

hrp0086p1-p565 | Perinatal Endocrinology P1 | ESPE2016

Different Long-term Neurodevelopmental Outcomes in Very Preterm Versus Very-low-birth-weight Infants

Hollanders Jonneke J , Schaefer Nina , van der Pal Sylvia M , Rotteveel Joost , Finken Martijn J J

Background: Birth weight (BW) is often used as a proxy for gestational age (GA) by studies on preterm birth. Recent data indicate that the terms very-low-birth-weight (VLBW; BW <1500 g) and very preterm (VP; GA <32 weeks) birth are not equivalent with regard to perinatal outcomes and postnatal growth up until final height. It is unknown whether the differences between these terms could be extended to long-term neurodevelopmental outcomes.Objectiv...

hrp0082p1-d2-253 | Thyroid (1) | ESPE2014

Maternal Hypothyroxinemia in Early Pregnancy is Associated with Poorer Arithmetic Performance in a School Test in Offspring at Age 5 Years

Noten Anna , Loomans Eva , Vrijkotte Tanja , van Trotsenburg Paul , van Eijsden Manon , Rotteveel Joost , Finken Martijn

Background: Subtle impairments in the thyroid function of pregnant women are associated with poorer scores on mental developmental scales in their children at age 2–3 years, and with reduced performance in a simple reaction time test at 5–6 years. However, associations with school performance estimates have never been studied.Objective and hypotheses: We aimed to assess the effect of normal variation in the maternal thyroid function during earl...

hrp0084fc10.5 | Perinatal Endocrinology | ESPE2015

Lack of Association between Transient Hypothyroxinaemia of Prematurity and Neurodevelopmental and Behavioral Outcomes in Young Adulthood

Hollanders Josephina J , Israels Joel , van der Pal Sylvia M , Rotteveel Joost , Finken Martijn J J

Background: Preterm newborns are at risk of becoming transiently hypothyroxinaemic, which has been associated with neurodevelopmental impairments in childhood. It is not known whether these associations persist into adulthood.Objective and hypotheses: We studied the relation between transient hypothyroxinaemia of prematurity and IQ, neuromotor functioning and problem behaviour at young adult age.Method: This was a prospective study...

hrp0084p1-146 | Miscelleaneous | ESPE2015

Salt Sensitivity of Blood Pressure at Age 7–8 Years in Preterm Born Children

Ruys Charlotte A , Lafeber Harrie N , Rotteveel Joost , Finken Martijn J J

Background: Preterm birth is associated with hypertension and increased fat contents in later life. Salt sensitivity (SS) could be a mechanism underlying this relationship. In adults SS has been recognised as a cause of hypertension that is related to low birth weight and obesity.Objective and hypotheses: We studied the prevalence of SS in 7–8-year old children born <32 weeks of gestation and/or with a birth weight <1500 g as well as its rel...

hrp0084p3-1085 | Perinatal | ESPE2015

Circadian Variation in Cortisol Concentration in Mother’s Milk

van der Voorn Bibian , Heijboer Annemieke , de Waard Marita , Verheijen Hester , Rotteveel Joost , Finken Martijn

Background: In mammals, maternal glucocorticoids are transmitted through breast milk, particularly under stressful circumstances. In humans, it is unclear whether milk cortisol levels are dependent on stressful perinatal circumstances, such as preterm birth.Objective and hypotheses: Our aim was to compare cortisol concentrations in breast milk of mothers of very preterm infants (GA <32 weeks) to breast milk cortisol concentrations of mothers of full-...