hrp0086s5.1 | Mitochondrial dysfunction and endoplasmic reticulum stress in endocrine diseases | ESPE2016

Wolfram Syndrome, a Prototype of ER Stress-Induced Beta Cell Death

Urano Fumihiko

Background: Endoplasmic reticulum (ER) participates in so many cellular tasks that trouble can ensue when it stops working properly, including β cell death in type 1 and type 2 diabetes mellitus. Despite the underlying importance of ER dysfunction in β cell death during the progression of diabetes, there is no effective treatment targeting the ER due to the complex etiologies of type 1 and type 2 diabetes.Objective and hypotheses: Our strategy ...

hrp0086p1-p231 | Diabetes P1 | ESPE2016

A Rare Form of Insulin Resistance with Pseudoacromegaly

Stone Stephen , Wambach Jennifer , Cole F. Sessions , Wegner Daniel , Urano Fumihiko

Background: Insulin resistance occurs in a variety of common endocrine disorders including obesity, type 2 diabetes, polycystic ovarian syndrome, and metabolic syndrome. Additionally, rare syndromes exist that result in extreme insulin resistance. These conditions help contribute to our knowledge of the mechanisms of insulin signalling and resistance.Objective and hypotheses: We report a case of a 12 year old female presenting to endocrinology clinic for...

hrp0089p3-p405 | Multisystem Endocrine Disorders P3 | ESPE2018

Lessons from Wolfram Syndrome: Initiation of DDAVP Therapy Causes Renal Salt Wasting due to Elevated ANP Levels, Rescued by Fludrocortisone Treatment

Kleanthous Kleanthis , Maratou Eirini , Spyropoulou Dora , Dermitzaki Eleni , Bothou Christina , Papadimitriou Anastasios , Zoupanos George , Moutsatsou Paraskevi , Urano Fumihiko , Papadimitriou Dimitrios T.

Background-Hypothesis: Sudden initiation of treatment for diabetes insipidus (DI) with DDAVP causes abrupt volume expansion resulting in particularly high secretion of Atrial Natriuteric Peptide (ANP) (1). ANP blocks all stimulators of zona glomerulosa steroidogenesis, resulting in secondary mineralocorticoid deficiency and acute hyponatremia, causing renal salt wasting (RSW) (2). Cases: Two sisters, a 19-year-old girl (A) and a 7-year-old girl (B) with Wolfra...

hrp0089p3-p410 | Multisystem Endocrine Disorders P3 | ESPE2018

A Novel Detrimental Homozygous Mutation of WFS1 Gene in Two Sisters from Non-consanguineous Parents with Untreated Diabetes Insipidus

Papadimitriou Dimitrios T , Kleanthous Kleanthis , Manolakos Emmanouil , Tiulpakov Anatoly , Nikolopoulos Thomas , Delides Alexandros , Voros Gerasimos , Dinopoulos Argyrios , Zoupanos George , Urano Fumihiko

Background: Wolfram syndrome (WS) is a rare autosomal recessive genetic disorder. We present two sisters from non-consanguineous parents, who presented to our pediatric endocrinology clinic due to severe polyuria-polydipsia with inappropriately treated DM (HbA1c 8.2% and 10.1%) and untreated DI.Methods: DNA was tested with PCR amplification and sequencing analysis (Sanger sequencing) of the entire coding region and all exon-intron splice junctions of the...