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...

hrp0084p1-27 | Diabetes | ESPE2015

Activation of Insulin Signaling in Gastrocnemius after Central Leptin Infusion is Associated with an Increase in Proliferation and Muscle Fibre Size

Barrios Vicente , Burgos-Ramos Emma , Canelles Sandra , Rodriguez Amaia , Gomez-Ambrosi Javier , Chowen Julie A , Fruhbeck Gema , Argente Jesus

Background: Skeletal muscle is the largest tissue involved in the insulin-stimulated disposal of glucose, with its size being controlled by hormonal status, among other factors. Leptin plays a primary role in the regulation of glucose homeostasis with a substantial degree of insulin and leptin cross-talk in muscle. However, the relationship between the leptin’s central effects on insulin sensitivity in muscle and associated structural changes remain unclear.<p class="...

hrp0097rfc11.2 | GH and IGFs | ESPE2023

Are pappalysins and stanniocalcins involved in modifying the bioavailability of IGF-I in children with onset of type 1 diabetes mellitus?

Güemes Maria , Canelles Sandra , Martín-Rivada Álvaro , Corredor Beatriz , Barrios Vicente , Argente Jesús

Introduction: Both poor and optimal metabolic control of type 1 diabetes mellitus (T1DM) in children can impact longitudinal growth. A decrease in insulin-like growth factor (IGF)-I and its binding protein 3 (IGFBP3) has been described in these patients. New growth regulatory factors [pappalysins (PAPP-As) and stanniocalcins (STCs)] could modulate the bioavailability of IGFs by regulating the concentrations of intact and free IGFBPs.<str...

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...

hrp0082p1-d2-69 | Diabetes (1) | ESPE2014

Activation of Insulin/IGF1 Signaling Could Increase Hypothalamic Lipid Anabolism in Non-Diabetic IRS2-Deficient Mice

Barrios Vicente , Baquedano Eva , Canelles Sandra , Gonzalez-Rodriguez Agueda , Burgos-Ramos Emma , Chowen Julie A , Frago Laura M , Valverde Angela M , Argente Jesus

Background: Insulin/IGF1 signaling plays a critical role in central glucose bioavailability and lipid metabolism. An increase in glucose disposal can generate reducing agents through the pentose-phosphate pathway necessary for the synthesis of free fatty acids (FFA). Disturbances in lipid synthesis are related to the appearance of insulin resistance and diabetes. The insulin receptor substrate 2 (IRS2) deficient mice (IRS2−/−) is an excellent model to st...

hrp0095p1-380 | Sex Differentiation, Gonads and Gynaecology, and Sex Endocrinology | ESPE2022

Effect of Long Acting Gonadotropin Releasing Hormone Agonists on Height Outcome in Children

Sahmoud Shaimaa , Gupta Sanjay , Greetham Sandra

Gonadotropin releasing hormone agonists (GnRHa) stops premature sexual maturation in young children and preserve the potential of achieving acceptable adult height.Aim: To assess the efficacy of long acting GnRHa in suppressing early pubertal development and its impact on height outcome in our patient population.Methods: Records of children treated with GnRHa since 2018 at Hull University Hospital;...

hrp0082p3-d3-792 | Fat Metabolism &amp; Obesity (2) | ESPE2014

Frequency of Vegetable and Fruit Consumption in Overweight Children and Their Parents

Escobar Sandra Beatriz Escobar , Awadalla Shokery

Background: Increased incidence of obesity is related to increased consumption of fast and processed food and decreased consumption of fruits and vegetables.Objective and hypotheses: Evaluate the habit of fruit and vegetable consumption in children with overweight.Method: A questionnaire was designed in which the frequency and quality of these habits were recorded and anthropometric data also. Parent’s habits regarding fruit a...

hrp0097p2-15 | Growth and Syndromes | ESPE2023

Autosomal dominant inherited VUS 3 in the fibrillin 2 gene in a patient with tall stature

Geyrhofer Angelika , Hirtenlehner Sandra , Gencik Martin

Background: The reasons for tall stature, defined as a height above the 97. percentile or above 2SD from the mean, are heterogeneous. Besides non-pathogenic forms like familial tall stature or constitutional advance of growth there are pathogenic forms like obesity, growth hormone excess, hyperthyreoidism, precocious puberty or some genetic disorders and syndromes that need to be concerned.Case Report: We report on a 14 ...

hrp0092p1-218 | GH and IGFs (1) | ESPE2019

Lessons From a Patient Carrying Both an 11p Paternal Duplication and 15q Deletion, Illustrating the Roles of IGF2 and IGF1R in Growth Regulation

Brioude Frederic , Bastaraud Sandra Chantot- , Whalen Sandra , Netchine Irene , Giabicani Eloise

IGF2, a major actor which stimulates feta growth, is located within the imprinted 11p15 region, and 11p paternal duplications are usually associated with Beckwith Wiedemann syndrome, a rare condition usually associated with overgrowth. The IGF type 1 receptor binds both IGF-I and IGF-II to promotes cell proliferation and growth, and the IGF1R gene is located at chromosome 15q. Patients with deletions or mutations of IGF1R usually present with intraut...

hrp0095p1-350 | Pituitary, Neuroendocrinology and Puberty | ESPE2022

Phenotypic characteristics of a cohort of patients with Septo-Optic Dysplasia followed in a Tertiary Centre.

Ardila Santos Sandra , Ciaccio Marta , Isabel Di Palma Maria

Introduction: Septo-optic dysplasia (SOD) is an uncommon, highly heterogeneous entity of multifactorial etiology, consisting in the association of 2 or more of the following characteristics: ophthalmological abnormalities [most frequently optic nerve hypoplasia (ONH)], midline brain abnormalities [such as aplasia/hypoplasia of the septum pellucidum (SP) and/or corpus callosum (CC)] and variable degree of hypotalamo-pituitary insufficiency (HPI)<p class="ab...