hrp0095p1-432 | Bone, Growth Plate and Mineral Metabolism | ESPE2022

Effects of COVID-19 pandemic on serum vitamin D concentration in Korean children

Choi Jinjoo , Choe Yunsoo , Yang Seung

Purpose: Vitamin D deficiency (VDD) is very common nowadays in children as well as in adults, probably due to decreased exposure to sunlight. COVID-19 pandemic resulted in school closure and decreased outdoor activity in children, which lead to lower chance for exposure to sunlight. It was reported that the higher level of visceral fat was associated with the lower vitamin D levels in children. The aim of this study is whether body mass index (BMI) affect seru...

hrp0097p1-418 | Bone, Growth Plate and Mineral Metabolism | ESPE2023

Comparison of efficacy and safety of oral cholecalciferol administration at 4-week intervals and daily administration to correct vitamin D deficiency in adolescents

Choi Jinjoo , Choe Yunsoo , Yang Seung

Objectives: Vitamin D deficiency is prevalent in pediatric population. Since low compliance may inhibit appropriate vitamin D supplementation in daily dosing regimen, intermittent high dose administration may be considered. We aimed to evaluate the efficacy and safety of monthly administration of oral cholecalciferol compared with daily dosing regimen in adolescents with vitamin D deficiency.Methods: This retrospective s...

hrp0098p1-141 | Fat, Metabolism and Obesity 2 | ESPE2024

Assessment of Central Obesity and Body Mass Index in Youth Using a Non-Contact Radar Sensor

Choi Jinjoo , Choe Yunsoo , Yang Seung

Background: Central obesity in children is a significant risk factor for cardiovascular diseases, potentially more critical than BMI-defined obesity, and can persist into adolescence and adulthood. Measuring the Waist-to-Hip Ratio (WHR), an indicator of central obesity and associated health risks, typically requires direct measurement with a tape, which can be inconvenient and socially unacceptable. Therefore, non-contact anthropometric techniques to measure b...

hrp0098p1-172 | Growth and Syndromes 2 | ESPE2024

Impact of Feeding Types on Catch-Up Growth in Early Infancy Among Small-for-Gestational-Age Infants: A Nationwide Korean Study

Choi Jinjoo , Choe Yunsoo , Yang Seung

Purpose: This study aimed to compare growth patterns and the achievement of catch-up growth (CUG) in small-for-gestational-age (SGA) infants at four years of age, based on the type of feeding during the first 4-6 months, using nationwide data.Methods: We included full-term 42,295 SGA children (21,917 boys; 52%) who participated in the first (4-6 months), second (9-12 months), third (18-24 months), and fifth (42-48 months...

hrp0086p2-p707 | Endocrinology and Multisystemic Diseases P2 | ESPE2016

The Triglyceride to High-Density Lipoprotein Cholesterol Ratio and Non-High-Density Lipoprotein Cholesterol Reference Data for Korean Children and Adolescents: Results of the 2007–2013 Korean National Health and Nutrition Examination Surveys (KHANES)

Kang Min Jae , Baek Joon Woo , Oh Yeon Joung , Hwang Il Tae , Yang Seung

Background: Cholesterol levels are variable throughout childhood and adolescence. The attention not only to conventional lipid profiles but also to non-high-density lipoprotein cholesterol (non-HDL-C) and triglyceride to HDL-C ratio (TG/HDL-C ratio) are becoming more apparent in pediatric lipid studies because of their clinical importance.Objective and hypotheses: The aim of the present study was to establish age- and gender-specific reference values for...

hrp0086p1-p727 | Pituitary and Neuroendocrinology P1 | ESPE2016

Changes of Serum AMH and Inhibin B Levels in Girls with Central Precocious Puberty before and During Treatment with GnRH Agonists

Oh Yeon Joung , Baek Joon Woo , Kang Min Jae , Yang Seung , Hwang Il Tae

Background: In girls with central precious puberty (CPP), the hypothalamic-pituitary-gonadal axis is prematurely activated. If the girl is treated with GnRH agonist (GnRH-a), gonadotropins levels become suppressed.Objective and hypotheses: We aimed to evaluate whether serum antimu llerian hormone (AMH) and inhibin B levels are affected in girls with CPP and whether pituitary suppression by GnRH-a affects serum AMH and inhibin B levels.<p class="abste...

hrp0084p3-876 | Fat | ESPE2015

Obesity has a Significant Impact on Hyperandrogenemia Only after Puberty in Korean Girls

Kang Min Jae , Shim Young Suk , Oh Yeon Joung , Hwang Il Tae , Yang Seung

Background: As metabolic complication and polycystic ovarian syndrome due to childhood obesity is rising, the role of hyperandrogenemia (HA) and hyperinsulinism is receiving attention.Objective and hypotheses: The aim of this study was to investigate the presence or absence of obvious HA according to pubertal status and to find potential etiologic determinants of HA in Korean obese girls.Method: We analysed 91 subjects aged 6–...

hrp0084p3-925 | GH &amp; IGF | ESPE2015

Influence of the -202 A/C IGFBP3 Promoter Polymorphism on Individual Variation in Body Height in Korean Girls

Yang Seung , Shim Young Suk , Kang Min Jae , Oh Yeon Joung , Hwang Il Tae

Background: The most common single nucleotide polymorphism in the IGFBP3 promoter region occurs at position -202. This polymorphic variation occurs frequently and may influence GH responsiveness and somatic growth.Objective and hypotheses: This study aimed to assess the effects of IGFBP3 promoter polymorphism on growth in children.Method: Restriction fragment length polymorphism (RFLP)-based genotyping of the -202 single nucleotide...

hrp0084p3-1138 | Puberty | ESPE2015

Psychosocial Changes after GnRH Agonist Treatment in Girls with Idiopathic Central Precocious Puberty

Yang Seung , Shim Young Suk , Kang Min Jae , Oh Yeon Joung , Hwang Il Tae

Background: In precocious puberty, girls experienced secondary sexual development earlier psychologically as well as physically. Self-stress due to a different body shape from the peer group, psychological concerns due to discrepancies between physical and chronological age, and long-term behavioural problems could occur.Objective and hypotheses: The aim of this study was to evaluate psychosocial changes in girls with precocious puberty between before an...

hrp0092p1-372 | Growth and Syndromes (to include Turner Syndrome) (2) | ESPE2019

A Considerable Role of NPR2 Mutation in Idiopathic Short Stature: Identification of Two Novel Mutations

Hwang Il Tae , Yi KyungHee , Kim Eun Young , Yang Seung

Introduction: C-type natriuretic peptide (CNP, NPPC gene) and its receptor, natriuretic peptide receptor B (NPR-B, NPR2 gene), is critical for endochondral ossification in growth plate. Biallelic NPR2 mutations are known as acromesomelic dysplasia, type Maroteaux which is characterized by severe short stature. A monoallelic NPR2 mutation has been suggested to mildly impair long bone growth.Obje...