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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...

The relation between angiotensin converting enzyme (ACE) gene polymorphism and neonatal hyperbilirubinemia in Korea
Mi Yeoun Kim, Jae Myoung Lee, Ji Sook Kim, Eun Ryoung Kim, Hee Jae Lee, Seo Hyun Yoon, Joo Ho Chung
Clin Exp Pediatr. 2007;50(1):28-32.   Published online January 15, 2007
Purpose : Human angiotensin converting enzyme (ACE) gene shows an insertion/deletion polymorphism in 16 intron, and three genotypes are determined by whether a 287 bp fragment of the DNA is present or not; II, ID and DD genotype. DD genotype has been suggested as a risk factor of chronic nephrotic disease such as IgA nephropathy and diabetic nephropathy, various cardiovascular...
1828G>A polymorphism of the UDP-glucuronosyltransferase gene (UGT1A1) for neonatal hyperbilirubinemia in Koreans
Ja Young Kim, Mi Yeoun Kim, Ji Sook Kim, Eun Ryoung Kim, Seo Hyun Yoon, Hee Jae Lee, Joo Ho Chung
Clin Exp Pediatr. 2006;49(1):34-39.   Published online January 15, 2006
Purpose : The incidence of neonatal hyperbilirubinemia is twice as high in East Asians as in Caucasians. However, its metabolic basis has not been clearly explained. The UDP-glucuronosyltransferase gene(UGT1A1) mutation was found to be a risk factor of neonatal hyperbilirubinemia. We studied whether neonatal hyperbilirubinemia is associated with the 1828G>A(rs 10929303) polymorphism of the UGT1A1 gene, which encodes for a...
The Association of Neonatal Hyperbilirubinemia with UGT1A1 and CYP1A2 Gene Polymorphism in Korean Neonates
Hoon Kang, Jun Ho Lim, Ji Sook Kim, Eun Ryoung Kim, Sung Do Kim, Hee Jae Lee, Joo Ho Chung
Clin Exp Pediatr. 2005;48(4):380-386.   Published online April 15, 2005
Purpose : The incidence of nonphysiologic neonatal hyperbilirubinemia is twice as high in East Asians as in whites. Recently, UGT1A1 mutation was found to be a risk factor for neonatal hyperbilirubinemia. In congenitally-jaundiced Gunn rats, which lack expression of UDP-glucuronosyltransferase, alternative pathways can be stimulated by inducers of CYP1A1 and CYP1A2 enzymes. CYP1A2 plays a major role in bilirubin degradation...
Polymorphism of UDP-glucuronosyltransferase Gene(UGT1A1) of Neonatal Hyperbilirubinemia in Korea
Ki Woong Hong, Hoon Kang, Soo Kim, Ji Sook Kim, Eun Ryoung Kim, Hee Jae Lee, Sheng-Yu Jin, Joo Ho Chung
Clin Exp Pediatr. 2004;47(1):18-23.   Published online January 15, 2004
Purpose : The incidence of neonatal hyperbilirubinemia is twice as high in East Asians as in whites and its metabolic basis has not been clearly explained. Recently, UDP-glucuronosyltransferase gene (UGT1A1) mutation was found to be a risk factor of neonatal hyperbilirubinemia in Japanese and Taiwanese Chinese. We studied whether neonatal hyperbilirubinemia is associated with mutation of UGT1A1, which is a...