Abstract
Leptin receptor gene expression has been measured in arcuate and ventromedial hypothalamic nuclei. Receptor mRNA in both hypothalamic areas was higher in obese mice than in lean littermates. Twice daily leptin administration for 7 days profoundly affected food intake, reduced leptin receptor mRNA in the arcuate nucleus, and had a similar effect on neuropeptide Y gene expression. A single leptin injection was ineffective. Exposure of lean mice to cold for 24 h caused an induction of leptin receptor and NPY mRNA which was normalized when animals were returned to the warm. Regulation of receptor gene expression may be an important component in the reading of the leptin signal.
Original language | English |
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Pages (from-to) | 185-188 |
Number of pages | 4 |
Journal | FEBS Letters |
Volume | 402 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 3 Feb 1997 |
Keywords
- Acclimatization
- Analysis of Variance
- Animals
- Arcuate Nucleus
- Carrier Proteins
- Cold Temperature
- Feeding Behavior
- Gene Expression Regulation
- Hypothalamus
- In Situ Hybridization
- Leptin
- Mice
- Mice, Obese
- Obesity
- Proteins
- RNA, Messenger
- Receptors, Cell Surface
- Receptors, Leptin
- Receptors, Neuropeptide Y
- Recombinant Proteins
- Transcription, Genetic
- Ventromedial Hypothalamic Nucleus