hrp0082p1-d3-95 | Sex Development | ESPE2014

Ovarian Development and Hormonal Feedback Mechanism in a 46XX Patient with cyp19a1 Deficiency Under Low Dose Estrogen Replacement

Burckhardt Marie-Anne , Obmann Verena , Janner Marco , Mullis Primus E

Background: Ovarian and uterine development in relation to hormonal feedback mechanisms (E2, LH, FSH, and inhibin) has rarely been studied. Therefore, the age specific and longitudinally adequate replacement dose of estradiol to achieve normal maturation in terms of ovarian and uterine development during infancy, childhood and adolescence remains not well known. However, aromatase deficiency offers an excellent model to study the relevant estradiol dose needed to ac...

hrp0082p2-d2-384 | Fat Metabolism & Obesity (1) | ESPE2014

Ambulatory Arterial Stiffness Index in Obese Children

Saner Christoph , Mullis Primus , Simonetti Giacomo , Janner Marco

Background: Altered arterial stiffness is a recognized risk factor of poor cardiovascularhealth. Ambulatory arterial stiffness index (AASI, defined as one minus the regression slope of diastolic on systolic blood pressure values derived from a 24 h arterial blood pressure monitoring (ABPM)) is an upcoming and readily available marker of arterial stiffness. We tested the hypothesis that AASI is increased in obese children compared to healthy subjects.Meth...

hrp0084fc4.4 | Growth | ESPE2015

Modulation of GH-1 Splicing as Potential Strategy to Rescue GH Deficiency Type II

Miletta Maria Consolata , Fluck Christa E , Mullis Primus-E

Background: Isolated GH deficiency type II (IGHD II), the autosomal-dominant form of GH deficiency, is mainly caused by specific splicing mutations in the human GH (hGH) gene (GH-1). These mutations, occurring in and around exon 3, cause complete exon 3 skipping and produce a dominant-negative 17.5-kDa GH isoform that reduces the accumulation and secretion of wt-GH.Objective and hypotheses: As the severity of IGHD II inversely correlate...

hrp0084p2-343 | Fat | ESPE2015

Chronodisruption in Obese Children

Saner Christoph , Mullis Primus , Simonetti Giacomo D , Janner Marco

Background: Altered circadian and ultradian blood pressure (BP) and heart rate (HR) rhythmicity has been described in many diseases with increased cardiovascular risk.Objective and hypotheses: We tested the hypothesis that rhythmicity in obese children is changed, compared to healthy subjects.Method: Circadian and ultradian BP and HR rhythmicity was assessed with Fourier analysis from 24-h ambulatory BP measurement (ABPM) in 75 obe...

hrp0082p1-d3-188 | Pituitary | ESPE2014

Butyrate Stimulates GH Secretion From Rat Anterior Pituitary Cells Via the G-Protein-Coupled Receptors GPR41 and 43

Miletta Maria Consolata , Petkovic Vibor , Eble Andree , Ammann Roland , Fluck Christa E , Mullis Primus E

Background: Butyrate is a short-chain fatty acid closely related to the ketone body ╬▓-hydroxybutyrate (BHB) considered as the major source of energy during prolonged exercise. During fasting, when the liver switches to fatty acid oxidation, a rise in serum GH occurs concomitantly with the accumulation of BHB and short chain fatty acids (SCFA) acetate, propionate and butyrate. Interactions between GH, ketone body and SCFA during the metabolic adaptation to fasting are poor...

hrp0084fc6.3 | Gonads & DSD | ESPE2015

Establishing the Role of the Steroid Backdoor Pathway for Androgen Biosynthesis in the Human Ovary

Marti Nesa , Sauter Kay S , Mullis Primus E , Fluck Christa E

Background: Recent work revealed two pathways in androgen biosynthesis, namely the classic and an alternative, the backdoor pathway. In this alternative pathway dihydrotestosterone is produced from 17-hydroxyprogesterone without the intermediacy of testosterone using mostly enzymes that are specific to the backdoor path. In the human ovary, regulation of androgen production plays a crucial role in normal physiology and in pathologies such as the polycystic ovary syndrome (PCOS...

hrp0082fc6.3 | Gonads & DSD | ESPE2014

LRH1 Rescues SF1 Deficiency for Steroidogenesis in vitro but Cannot Explain the Broad Phenotype of SF1 Deficiency in men

Camats Nuria , Fernandez-Cancio Monica , Audi Laura , Andaluz Pilar , Mullis Primus E , Carrascosa Antonio , Fluck Christa E

Introduction: Steroidogenic factor1 (SF1/NR5A1) regulates adrenal and sex development and function. SF1 mutations manifest with a broad phenotype; generally in 46,XY individuals with disorders of sex development (DSD) and in women with ovarian insufficiency. So far, no genotype┬ľphenotype correlation has been found. We hypothesized that the broad phenotype of SF1 mutations may be due to a second hit in a gene with similar function. Liver receptor homolog-1 (LRH1/<...

hrp0082lbp-d3-1005 | (1) | ESPE2014

A 2-Year Multi-Centre, Open Label, Randomized Two Arm Study of Genotropin Treatment in Very Young Children Born Small for Gestational Age: Early Growth and Neurodevelopment

De Schepper Jean , Vanderfaeillie Johan , Mullis Primus-E , Rooman Raoul , Matthews Lisa , Dilleen Maria , Browning Richard , Gomez Roy , Wollmann Hartmut

Background: There are limited data available on the efficacy and safety of GH treatment in very young (<30 months) short children, born small for gestational age (SGA).Objectives: To determine the effect of 24 months of GH treatment on body height, BMI, and head growth as well as overall psychomotor development (using the Bayley Scale of Infant Development (BSID-II)) and demonstrate its safety in young (aged between 19 and 29 months) short SGA childr...

hrp0084p1-64 | DSD | ESPE2015

MAMLD1 Mutations Seem Not Sufficient to Explain a 46, XY DSD Phenotype. What else?

Camats Nuria , Fernandez-Cancio Monica , Audi Laura , Mullis Primus E , Moreno Francisca , Casado Isabel Gonzalez , Lopez-Siguero Juan Pedro , Corripio Raquel , de la Vega Jose Antonio Bermudez , Blanco Jose Antonio , Fluck Christa E

Background: The MAMLD1 gene (Xp28) is thought to cause disorder of sex development (DSD) in 46, XY patients, mostly presenting with hypospadias, and, recently, also gonadal dysgenesis. However, there is some controversy about the role of MAMLD1 in sex development because i) some MAMLD1 variants are also detected in normal individuals, ii) others are not present in all affected DSD individuals of the same family; iii) several MAMLD1 mutations...