Searchable abstracts of presentations at key conferences in endocrinology

ea0070ep381 | Reproductive and Developmental Endocrinology | ECE2020

46, XX male syndrome- testicular disorder of sexual differentiation

Köseoğlu Derya , Helvaci Nafiye

Introduction: 46, XX male syndrome–testicular disorder of sexual differentiation (DSD) is a rare condition, that was first described by la Chapelle et al. in 1964. The phenotypes of 46, XX testicular DSD include males with normal phenotype, males with genital ambiguities or males with true hermaphrodites. The diagnosis may be more difficult in adults with normal gender development than in children. Here, we present hormonal and cytogenetic conditions of an adult male who...

ea0063gp67 | Reproductive Axis | ECE2019

MRI-based proton-density fat fraction measurements reveal alterations of abdominal fat, bone and muscle composition in lean women with PCOS

Oguz Seda H. , Idilman İlkay S. , Helvaci Nafiye , Karcaaltincaba Musturay , Yildiz Bulent Okan

Background: Proton-density fat fraction (PDFF), derived from chemical shift encoding-based water-fat magnetic resonance imaging, has emerged as an important surrogate method for calculation of fat composition in a number of tissues including liver, vertebrae and muscles. This study aims to determine whether fat composition of these tissues, as well as visceral and subcutaneous adiposity differ between women with PCOS and healthy controls.Methods: 17 lean...

ea0063p1024 | Interdisciplinary Endocrinology 2 | ECE2019

Association of the Period3 clock gene polymorphism with adrenocorticotropin-stimulated cortisol levels among patients with autoimmune thyroid disease

Helvaci Nafiye , Oguz Seda , Kabacam Serkan , Karabulut Erdem , Akbiyik Filiz , Alikasifoglu Mehmet , Gurlek Alper

Background: Immune function and responses are tightly regulated by the circadian clock system and hypothalamic-pituitary-adrenal (HPA) axis. Accumulating evidence supports that there is a strong mutual relationship between these two regulatory systems at multiple levels. Recent publications suggest that the clock system may also regulate glucocorticoid release from adrenal glands by altering the sensitivity of the adrenal cortex to adrenocorticotropic hormone (ACTH).<p cla...

ea0049gp212 | Thyroid 2 | ECE2017

Association of the Period3 clock gene polymorphism with autoimmune thyroid diseases

Helvaci Nafiye , Oguz Seda , Kabacam Serkan , Karabulut Erdem , Akbiyik Filiz , Alikasifoglu Mehmet , Gurlek Alper

Background: Circadian rhythmicity is generated by a set of genes including Period3. Changes in the expression of Period3 and other clock genes have been linked with regulation of the immune system. Period3 polymorphisms have been associated with circadian disruption and so immune system dysregulation and altered secretion of several cytokines, which can lead to inflammatory and autoimmune disorders.Aim: To investigate the influence of a polymorphism in P...

ea0035p48 | Adrenal cortex | ECE2014

Retrospective analysis of adrenal ıncidentalomas: a single center experience

Akin Safak , Helvaci Nafiye , Dagdelen Selcuk , Yildiz Bulent Okan , Gurlek Alper , Erbas Tomris , Bayraktar Miyase

Background and aim: Incidentally discovered adrenal masses (adrenal incidentalomas (AI)), generally 1 cm or more in diameter, are mostly benign and asymptomatic and are often considered as nonfunctional tumors. The aim of this study was to perform the imaging characteristics, endocrinologic screening and histologic diagnoses of adrenal incidentaloma cases encountered in our institute.Methods: This retrospective evaluation of patients with AI includes 543...