Leptin and puberty
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منابع مشابه
Leading articles Leptin and puberty
Our knowledge of the potential genetic link between fat metabolism and the reproductive axis dates back to the 1950s when the obese (ob/ob) mouse strain was first described. These mice were not only distinctly hyperphagic and rapidly developed obesity associated with hyperglycaemia and insulin resistance, but they were also infertile. It was not until 1994 when the leptin (ob) gene was postiona...
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The present study was undertaken to examine the effect of recombinant chicken leptin administered to fed ad libitum and feed-restricted immature chickens of a layer strain on ovarian development and the timing of sexual maturity. In the first experiment 11-week-old pullets (77 days of age) fed ad libitum were injected daily with leptin at four dose levels (4, 16, 64 and 256 microg/kg body weigh...
متن کاملNo Kiss1ng by leptin during puberty?
Leptin exerts a permissive action on puberty by stimulating release of gonadotropin-releasing hormone (GnRH) in the hypothalamus. However, GnRH neurons lack leptin receptor (LepR), indicating that leptin must indirectly regulate these neurons. The Kiss1 gene produces kisspeptins that stimulate GnRH secretion. Because Kiss1 neurons express LepR and inactivation of Kiss1 causes hypogonadotropic h...
متن کاملLeptin accelerates the onset of puberty in normal female mice.
The fat-derived hormone, leptin, is proposed to serve as an adipostatic signal to the brain to reduce food intake and body weight. In addition to its effects on body weight, chronic leptin treatment restores puberty and fertility to ob/ob mice with total leptin deficiency, and acute treatment substantially corrects hypogonadism in mice starved for 2 d without affecting body weight. Leptin may t...
متن کاملSerum leptin concentration during puberty in healthy nonobese adolescents.
Data obtained during the past five years have indicated that there are important age- and gender-based differences in the regulation and action of leptin in humans. To study the physiological changes of leptin during puberty in both sexes, and its relationship with body composition and sexual maturation, we measured leptin concentrations in 175 healthy adolescents (80 girls, 95 boys, 10-18 year...
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ژورنال
عنوان ژورنال: Archives of Disease in Childhood
سال: 2000
ISSN: 0003-9888
DOI: 10.1136/adc.83.1.1