hrp0086rfc5.8 | Management of Disorders of Insulin Secretion | ESPE2016

Stress Management and Health Promotion through Family Intervention Improves Metabolic Control in Children and Adolescents with Type 1 Diabetes

Panayi Laura , Kanaka-Gantenbein Christina , Darviri Christina , Chrousos George P.

Background: Optimal glycemic control in children and adolescents with type 1 diabetes mellitus (T1DM) is often hampered owing to psychologic maladjustment of both patients and their parents. Accumulating evidence suggests that hyperglycemia may be associated with prolonged activation of the stress system.Objective and hypotheses: To pilot test a 12-week intervention program including psychoeducation about stress, healthy lifestyle, diaphragmatic breathin...

hrp0082fc12.5 | Obesity | ESPE2014

Low Circulating Levels of DKK-1 Protein in Obese Children Indicate Suppression of Canonical Wnt Signaling

Kanaka-Gantenbein Christina , Terpos Evangelos , Chrousos George , Papassotiriou Ioannis

Background: Secretion of Wnt-proteins by adipose cells plays an important role in the control of adipogenesis. The Wnt-antagonist, dickkopf-1 (DKK-1), is secreted by human pre-adipocytes and influences adipocyte maturation and growth. DKK-1 mRNA increases 6 h after onset of human adipogenesis followed by an increase in DKK-1 protein. Of note, DKK-1 protein has been implicated also in bone remodeling pathways.Patients and Methods: In this study we measure...

hrp0082p1-d2-115 | Fat Metabolism & Obesity (1) | ESPE2014

Important Links Between Fat Derived Proteins and Bone Remodeling Factors in Lean and Obese Girls

Kanaka-Gantenbein Christina , Terpos Evangelos , Chrousos George , Papassotiriou Ioannis

Background and aims: Fat and bone are linked by a multitude of pathways supporting a skeleton appropriate for the mass of adipose tissue of the organism. We aimed to investigate the relations of adipose tissue hormones such as leptin, adiponectin, retinol-binding-protein-4 (RBP-4) and lipocalin-2 along with the low grade inflammation marker hs-CRP with markers of bone metabolism such as osteoprotegerin (OPG), receptor-activator of NF-κB ligand (RANKL), osteocalcin, C-term...

hrp0082p3-d2-891 | Perinatal and Neonatal Endocrinology (1) | ESPE2014

A Novel Mutation in the NR3C2 Gene Causing Pseudohypoaldosteronism Type 1

Sertedaki Amalia , Kanaka-Gantenbein Christina , Chrousos George P

Background: Pseudohypoaldosteronism type 1 (PHA1) is a rare inherited disease characterized by mineralocorticoid resistance with subsequent salt wasting, hyperkalemia, metabolic acidosis, and elevated plasma renin and aldosterone levels.Patients and methods: We report a male newborn that presented with failure to thrive and sustained hyponatremia during his early postnatal period. He was conceived after IVF (twin pregnancy) and prematurely born by cesare...

hrp0084p3-730 | Diabetes | ESPE2015

β-Cells’ Functional Exhaustion at Type 1 Diabetes Onset may Lead to Early Microvascular Complications

Papadopoulou Nektaria , Dacou-Voutetakis Catherine , Chrousos George , Kanaka-Gantenbein Christina

Background: Diabetic ketoacidosis (DKA) is a severe and often the inaugural clinical manifestation of type 1 Diabetes (T1D). Diabetic nephropathy is one of the most devastating chronic complications of T1D and its’ early diagnosis is traditionally based on microalbuminuria.Objective and hypotheses: The aim was to investigate the possible associations between the initial clinical manifestations and the chronic complications of T1D.<p class="abste...

hrp0094p2-37 | Adrenals and HPA Axis | ESPE2021

Congenital Adrenal Hyperplasia caused by compound heterozygosity of two novel CYP11B1gene variants.

Fylaktou Eirini , Smyrnaki Smyrnaki Penelope , Sertedaki Amalia , Kanaka-Gantenbein Christina ,

Introduction: Congenital Adrenal Hyperplasia (CAH) is an autosomal recessive disorder caused by pathogenic variants in seven genes involved in the cortisol and aldosterone biosynthetic pathway. The second most common cause of CAH, 11β-hydroxylase deficiency (11βOHD), is attributed to pathogenic variants in the CYP11B1gene encoding for the enzyme 11β-hydroxylase (11βOH).Case presentation: A thirteen-year-old g...

hrp0097p1-201 | Adrenals and HPA Axis | ESPE2023

Molecular characterization of TNXA/TNXB chimeras in cases carrying deletion of the CYP21A2 gene: High incidence of chimeras identified.

Fylaktou Irene , Mertzanian Anny , Sertedaki Amalia , Kanaka-Gantenbein Christina

Introduction: CAH-X syndrome refers to a subset of Congenital adrenal hyperplasia (CAH) patients who display the hypermobility phenotype of Ehlers–Danlos syndrome (hEDS) due to the monoallelic/biallelic presence of a CYP21A2 deletion extending into the TNXB gene (chimeric TNXA/TNXB gene). To date, three different TNXA/TNXB chimeras have been described, CH-1 (presence of a TNXA-derived 120bp deletion in exon 35 of the <...

hrp0095p1-210 | Adrenals and HPA Axis | ESPE2022

Congenital Adrenal Hyperplasia due to 21-hydroxylase deficiency: the correlation of 17-hydroxyprogesterone stimulated concentrations with genotype for the identification of the molecular defect- A study of 526 cases

Fylaktou Irene , Mertzanian Anny , Charmandari Evangelia , Kanaka-Gantenbein Christina , Sertedaki Amalia

Introduction: Congenital adrenal hyperplasia (CAH) is an autosomal recessive disorder caused by impairment of one of the enzymes involved in the steroidogenesis pathway. CAH due to 21-hydroxylase deficiency (21-OHD) is attributed to mutations of the CYP21A2 gene and is distinguished into classic [salt wasting (SW), simple virilizing (SV)] and non-classic form. Herein we present a) the genetic investigation of 526 subjects with suspicion of 21-OHD in t...

hrp0095p1-189 | Thyroid | ESPE2022

Resistance to Thyroid Hormone β in an infant with a novel de novo mutation of the THRB gene

Sertedaki Amalia , Dolianiti Maria , Sakka Sofia , Siahanidou Sultana , Kanaka-Gantenbein Christina

Introduction: Resistance to Thyroid Hormone (RTH) is a clinical syndrome characterized by impaired end-organ responsiveness to Thyroid Hormone (TH). The cardinal features of this syndrome are elevated serum levels of free THs with normal or high TSH, often with goiter and no clear symptoms of thyrotoxicosis. Mutations in the Thyroid Hormone Receptor beta (THRB) gene constitute the most frequent cause of RTH, defined as RTHβ.<p class="abstext"...

hrp0092fc1.3 | Diabetes and Insulin Session 1 | ESPE2019

Next Generation Sequencing in Greek MODY Patients Increases Diagnostic Accuracy and Reveals a High Percentage of MODY12 Cases

Tatsi Elizabeth-Barbara , Sertedaki Amalia , Skorilas Andreas , Chrousos George , Kanaka-Gantenbein Christina

Introduction: Maturity Onset Diabetes of the Young (MODY) constitutes a genetically and clinically heterogeneous type of Monogenic Diabetes (MD), characterized by early onset of hyperglycemia, autosomal dominant inheritance and defect in β-cell insulin secretion. To date, 14 different MODY subtypes have been reported, each one with a distinct genetic etiology.Materials and Methods: We designed a NGS TGP of seven ...