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Case Report
Successful sulfonylurea treatment in a patient with permanent neonatal diabetes mellitus with a novel KCNJ11 mutation
Sung Yeon Ahn, Gu-Hwan Kim, Han-Wook Yoo
Clin Exp Pediatr. 2015;58(8):309-312.   Published online August 21, 2015

Permanent neonatal diabetes mellitus refers to diabetes that occurs before the age of 6 months and persists through life. It is a rare disorder affecting one in 0.2-0.5 million live births. Mutations in the gene KCNJ11, encoding the subunit Kir6.2, and ABCC8, encoding SUR1 of the ATP-sensitive potassium (KATP) channel, are the most common causes of permanent neonatal diabetes mellitus....

Original Article
Excess of leptin inhibits hypothalamic KiSS-1 expression in pubertal mice
Sung Yeon Ahn, Sei Won Yang, Hee Jae Lee, Jong Seon Byun, Ji Yeon Om, Choong Ho Shin
Clin Exp Pediatr. 2012;55(9):337-343.   Published online September 14, 2012
Purpose

Leptin has been considered a link between metabolic state and reproductive activity. Defective reproductive function can occur in leptin-deficient and leptin-excessive conditions. The aim of this study was to examine the effects of centrally injected leptin on the hypothalamic KiSS-1 system in relation to gonadotropin-releasing hormone (GnRH) action in the initial stage of puberty.

Methods

Leptin (1 µg) was injected directly into...

Factors Affecting the Increments of Body Mass Index in Adult Survivors of Childhood Brain Tumors
Jae Ho Yoo, Sung Yeon Ahn, Choong Ho Shin, Sei Won Yang
Clin Exp Pediatr. 2004;47(9):970-977.   Published online September 15, 2004
Purpose : The purpose of this study was to evaluate the factors affecting the increments of body mass index(BMI) in adult survivors from childhood brain tumors. Methods : We retrospectively reviewed medical records of 63 patients who were diagnosed with brain tumors and treated at Seoul National University Children's Hospital between 1982 and 2000. We evaluated the factors affecting adult BMI(aBMI)...
The Effects of Gonadotropin-Releasing Hormone Agonists on Final Height and its Related Factors in Patients with True Precocious Puberty
Sung Yeon Ahn, Jae Ho Yoo, Choong Ho Shin, Sei Won Yang
Clin Exp Pediatr. 2004;47(6):647-655.   Published online June 15, 2004
Purpose : The aim of this study was to evaluate the effects of treatment with GnRH agonists on final height(FH) and the influencing factors on height gains. Methods : Twenty-five girls and five boys with true precocious puberty, who were treated with GnRH agonists for more than one year and had attained final height, were evaluated retrospectively. We analysed auxological parameters...