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58th Annual ESPE

Vienna, Austria
19 Sep 2019 - 21 Sep 2019

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The theme of this year’s meeting is Variety and Variation in Paediatric Endocrinology. Join us in Vienna to explore the diversity we encounter in our discipline and the care that we have to exercise when using the term “normality”. Whilst gaining an update on the latest treatments, clinical best practice and cutting edge research in the field of paediatric endocrinology.

Free Communications

Late Breaking Abstracts

hrp0092fc15.1 | Late Breaking Abstracts | ESPE2019

DLG2 Mutations in Patients with Delayed or Absent Puberty

Jee Youn Hee , Won Sehoon , Lui Julian C. , Jennings Melissa , Whalen Philip , Yue Shanna , Cheetham Tim , Boden Matthew G. , Radovick Sally , Quinton Richard , Leschek Ellen W. , Aguilera Greti , Yanovski Jack A. , Seminara Stephanie B. , Roche Katherine W. , Crowley William F. , Delaney Angela , Baron Jeffrey

NMDA (N-Methyl-D-aspartic acid) receptors have been shown to control the timing of sexual maturation in laboratory animals. Therefore, variants in genes impacting NMDA receptor signaling might be predicted to affect human puberty. We studied an extended family with extremely delayed puberty (menarche at 16.5 - 18 years for female family members and pubertal onset at 16 years for male family members). Exome sequencing revealed a rare missense variant (F900V) in DLG2, w...

hrp0092fc15.2 | Late Breaking Abstracts | ESPE2019

HDAC4 Mutations Cause Diabetes and Induce β-Cell FoxO1 Nuclear Exclusion

Gong Maolian , Yu Yong , Vuralli Dogus , Fröhler Sebastian , Kühnen Peter , Du Bois Philipp , Zhang Jingjing , Hussain Khalid , Fielitz Jens , Jia Shiqi , Chen Wei , Raile Klemens

Background: Studying patients with rare Mendelian diabetes has highlighted molecular mechanisms regulating β-cell pathophysiology. Previous, experimental studies have shown that Class IIa histone deacetylases (HDAC4, 5, 7, and 9) modulate mammalian pancreatic endocrine cell differentiation, function and finally glucose homeostasis.Methods: We performed exome sequencing in one adolescent boy with non-autoimmune di...

hrp0092fc15.3 | Late Breaking Abstracts | ESPE2019

The P450 Side-Chain Cleavage Isozyme Cyp11A2 Facilitates Interrenal and Gonadal Steroid Hormone Biosynthesis in Developing and Adult Zebrafish

Li Nan , Oakes James A , Storbeck Karl-Heinz , Cunliffe Vincent T , Krone Nils P

Cytochrome P450 side-chain cleavage enzyme, encoded by the CYP11A1 gene, catalyzes the first and rate-limiting step of steroid hormone biosynthesis. Previous morpholino knockdown studies described the divergent functions of the two cyp11a paralogs in zebrafish. Cyp11a1 has been suggested to be required for early development, whereas cyp11a2 is a functional equivalent of human CYP11A1 and is essential for the initiation and maintenan...

hrp0092fc15.4 | Late Breaking Abstracts | ESPE2019

Defects in the GnRH Neuroendocrine Network Affect the Timing of Puberty

Saengkaew Tansit , Mancini Alessandra , Ruiz-Babot Gerard , Cabrera Claudia , Barnes Michael , Dunkel Leo , Guasti Leonardo , Howard Sasha

Background: Self-limited delayed puberty (DP) is an extreme variant of normal pubertal timing and it often clusters in families. Although it is highly heritable and is the most common cause of delayed puberty, little is known about the genetic control. GnRH neuronal biology has been implicated as a key element in the pathogenesis of DP. By focusing on genes involved in GnRH neuron development, migration and function we may understand more about the genetic bas...

hrp0092fc15.5 | Late Breaking Abstracts | ESPE2019

Effects of Bifidobacterium animalis subsp. lactis on Children with Prader-Willi Syndrome: A Randomized, Double-Blind, Placebo-Controlled, Crossover Trial

Ramon-Krauel Marta , Amat-Bou Montse , García-Rivera Sonika , Corripio Raquel , Ibáñez Lourdes , Lerin Carles

The gut microbiome has recently emerged as a major contributor to obesity and metabolic disease. Specifically, Bifidobacterium animalis sups. lactis (BAL) has shown promise for obesity treatment in human subjects, improving body composition and metabolic health. Moreover, tryptophan metabolism, a crucial regulator of satiety mechanisms and anxiety, is a main target of BAL. Given that clinical manifestations of Prader-Willi syndrome (PWS) include hyperphagia, ...

hrp0092fc15.6 | Late Breaking Abstracts | ESPE2019

Leptin Influences the Down-Regulation of UCP-1 Expression in Brown Adipose Tissue During Negative Energy Balance

Barrios Vicente , Canelles Sandra , Frago Laura M. , Chowen Julie A. , Argente Jesús

Background: The GH/IGF-I axis is involved in metabolic control and studies suggest that IGF-I deficiency and subsequent changes in IGF-I signaling in brown adipose tissue (BAT) modifies its thermogenic capacity. Food restriction reduces thermogenic capacity in BAT, while leptin stimulates thermogenesis through uncoupling protein 1 (UCP-1) induction. Leptin and IGF-I maintain important crosstalk in different tissues, but whether these two hormones interact to r...