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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...

A Study on Hormonal Change of Lh, FSH, and Testosterone and Testicular Volumes in Pubertal Mal Children.
Heung Dong Kim, Duk Hi Kim, Ki Keun Oh
Clin Exp Pediatr. 1986;29(9):979-987.   Published online September 30, 1986
The mechanism involved in pubertal changes has not been clearly demonstrated, but evidence has been accumulated that hormonal changes are responsible for this pubertal changes. We studied the height, weight, testicular volume, bone age, LH, FSH, and testosterone, "by Tanner stage of pubic hair development in 134 pubertal male children with no previous endocrine disease, who admitted at Yonsei University Medical...