hrp0092p2-46 | Bone, Growth Plate and Mineral Metabolism | ESPE2019

Seasonal 25-hydroxy Vitamin D3 Variations in School-aged Children from Santiago de Chile

Poggi Helena , Dominguez Gonzalo , Monica Arancibia , Moore Rosario , D'Apremont Ivonne , Solari Sandra , Allende Fidel , Sifaqui Sofia , Garcia Hernan , Martinez-Aguayo Alejandro

Introduction: The main role of Vitamin D (VitD) is the regulation of calcium, which is also regulated by the parathyroid hormone (PTH), and phosphate metabolism. The main source of the more biologically active 25-hydroxy-Vitamin D3 (25OHVitD3) comes from the action of ultraviolet light on the skin.Aim: To determine if there are differences in concentrations of 25OHVitD3, calcium and PTH in school-aged children throughout...

hrp0089p1-p140 | Fetal, Neonatal Endocrinology and Metabolism P1 | ESPE2018

Sexual Dimorphism of IGF1 and IGF2 Expression in the Neonatal Rat Brain

Guerra-Cantero Santiago , Torrecilla Marta , Diaz Francisca , Argente Jesus , Chowen Julie

Insulin-like growth factor (IGF) 2 plays a fundamental role in prenatal growth and development. The IGF2 gene is imprinted, with the paternally inherited copy being active and the maternal copy being silenced in most tissues. During development, the expression of IGF2 is sexually dimorphic in some tissues and this is thought to be involved in the development of some sexually dimorphic features. For example, IGF2 expression is reported to be higher in the male brain co...

hrp0082p1-d1-64 | Diabetes | ESPE2014

Biomarkers of Subclinical Inflammation in an Infant–Juvenile Population with Type 1 Diabetes

Bazan Maria , Casella Sofia , Lopez Santiago , Carrizo Teresita , Velarde Maria , Diaz Elba , Abregu Adela

Background: Diabetes is associated with increased risk of vascular disease. In children and adolescents with type 1 diabetes (T1D), clinical manifestations of vascular complications are infrequent; however, a pro-inflammatory state and endothelial disturbance could appear early. A subclinical inflammation state result in increased plasma levels of adhesion molecules, inflammatory cytokines as tumor necrosis factor alpha (TNFα), and acute phase proteins as C-reactive prote...

hrp0094p2-248 | Growth hormone and IGFs | ESPE2021

Reduction in pappalysin and stanniocalcin levels explain the decrease in IGF-I bioavailability in anorexia nervosa

Martin-Rivada Alvaro , Guerra-Cantera Santiago , Campillo-Calatayud Ana , Camarneiro Ricardo , Graell Montserrat , Barrios Vicente , Argente Jesus ,

Background: Pappalysins (PAPP-A, PAPP-A2) and stanniocalcins (STC-1, STC-2) are novel regulators of the GH-IGF axis, modulating IGF bioavailability through control of cleavage of IGFBPs and release of IGF from the ternary complex. Changes in the peripheral IGF system, including low IGF concentrations independently of GH secretion, have been reported in scenarios of malnutrition such as anorexia nervosa (AN). The role of pappalysins and stanniocalcins in the pa...

hrp0095p1-98 | GH and IGFs | ESPE2022

Supporting the mental wellbeing of caregivers of children under growth hormone treatment: mix-methods evaluation of the Adhera® Caring Program.

de Arriba Antonio , Fernandez-Luque Luis , Alice Chicchi Giglioli Irene , Luis González-Sanz Pedro , Vara Marta , Morte Patricia , Hors-Fraile Santiago

Background: The emotional distress of caregivers (i.e., parents) of children with long-term conditions affects their self-management behaviors, including treatment adherence. These conditions are diverse and prevalent, including diabetes, obesity, and growth hormone disorders (GHD). The caregivers’ emotional well-being is then a core aspect of their own quality of life, and their children’s. Emerging digital therapeutics solutions may improve such ...

hrp0092fc8.2 | Pituitary, Neuroendocrinology and Puberty Session 1 | ESPE2019

Analysis of Hypothalamic Metabolic Circuits after Normalization of Body Weight in Mice That Had Been Obese Due to High Fat Diet Intake

Guerra-Cantera Santiago , Frago Laura , Ros Purificación , Canelles Sandra , Díaz Francisca , Freire-Regatillo Alejandra , Torrecilla-Parra Marta Marta , Argente Jesús , Chowen Julie A.

The obesity epidemic continues to be a dramatic problem in the developed world despite attempts to curtail its rise. Reducing energy intake and/or increasing energy expenditure can result in weight loss; however, if one returns to their poor lifestyle habits the previous weight is not only recuperated, but often surpassed.We hypothesized that although a normal body weight may be achieved, the hypothalamic circuits controlling appetite and energy expendit...

hrp0092fc8.4 | Pituitary, Neuroendocrinology and Puberty Session 1 | ESPE2019

Peripheral and Hypothalamic Alterations in the Insulin-like Growth Factor (IGF) System in Response to High Fat Diet-induced Weight Gain

Guerra-Cantera Santiago , Díaz Francisca , Ros Purificación , Freire-Regatillo Alejandra , Torrecilla-Parra Marta , Barrios Vicente , Frago Laura , Chowen Julie A. , Argente Jesús

The insulin-like growth factor (IGF) system is fundamental for physiological processes such as growth and metabolism. In addition, in the brain it regulates glucose metabolism and neuroprotection. The IGF axis can be altered by nutritional status, but little is known regarding the effects of specific dietary components on this system.Our aim was to examine how high-fat diet (HFD) and low-fat/high sucrose diet (LFHSD) intake affect the central and circula...

hrp0086fc4.1 | Pathophysiology of Obesity | ESPE2016

Contribution of Rare CNVs and Point Mutations to the Etiology of Severe Early-onset Obesity

Serra-Juhe Clara , Martos-Moreno Gabriel A , Bou Francesc , Flores Raquel , Rodriguez-Santiago Benjamin , Gonzalez Juan R , Argente Jesus , Perez-Jurado Luis A

Background: Studies aimed at elucidating the pathophysiology of obesity consistently describe it as a highly heterogeneous disorder at both clinical and molecular level. Despite rare monogenic forms and several regions of susceptibility have been defined, the genetic causes underlying the disease remain largely unknown.Objective and hypotheses: We aimed to identify novel genetic abnormalities in a cohort of Spanish children with severe non-syndromic earl...

hrp0094p2-252 | Growth hormone and IGFs | ESPE2021

Pappalysins and stanniocalcins in prenatal and postnatal life

Martin-Rivada Alvaro , Campillo-Calatayud Ana , Guerra-Cantera Santiago , Sanchez-Holgado Maria , Angel Martos-Moreno Gabriel , Soriano-Guillen Leandro , Pellicer Adelina , Barrios Vicente , Argente Jesus ,

Background: The human growth pattern varies from intrauterine to extrauterine life, with the GH-IGF axis being immature at birth and IGF-I assuming an important role in promoting postnatal growth. The actions of IGF-I are modulated by its interactions with IGFBPs, with this interaction being regulated by pappalysins (PAPP-A, PAPP-A2) and stanniocalcins (STC-1, STC-2), and thus modifying the amount of free IGF-I.Objective:</strong...

hrp0092p1-43 | Fat, Metabolism and Obesity | ESPE2019

Association of Biomarkers of Endothelial Dysfunction with MicroRNAs Levels in Overweight and Obese Adolescentes

Huang Fengyang , Brianza-Padilla Malinalli , Bonilla-Jaime Herlinda , del-Río-Navarro Blanca Estela , Villafaña-Rauda Santiago , Romero-Nava Rodrigo , Sánchez-Muñoz Fausto

Background and Aims: MicroRNAs play important regulatory roles in cholesterol homeostasis and endothelial dysfunction. The aim of present study was to characterize the expression of miRNAs in overweight/obese adolescents and to identify the possible correlation with metabolic profile and inflammatory biomarkers.Methods: 79 overweight and obese adolescents aged 13.0±2.0 years and 28 normal weight adolescents aged 13....