Look up: Leptin

1. 
   Leptin
   Leptin: A hormone that has a central role in fat metabolism. Leptin was originally thought to be a signal to lose weight but it may, instead, be a signal to the brain that there is fat on the body. Hugely obese children have been found who have an inability to lose weight due to a genetic inability to produce leptin. Injections of leptin have had d ...
   Found on http://www.medterms.com/script/main/art.
   
   
2. 
   leptin
   hormone produced by fat cells and received by receptors in the hypothalamus Category: Medicine
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. 
   leptin
   Product (16 kD) of the ob (obesity) locus. Found in plasma of mouse and man: reduces food uptake and increases energy expenditure.
   Found on
   
   
4. 
   leptin
   <protein> Product (16 kD) of the ob (obesity) locus. Found in plasma of mouse and man: reduces food uptake and increases energy expenditure. ... (18 Nov 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
5. 
   Leptin
   `Leptin` (from the Greek word `leptos`, meaning thin) is a 16 kDa protein hormone that plays a key role in regulating energy intake and energy expenditure, including the regulation (decrease) of appetite and (increase) of metabolism. The effects of leptin were observed by studying mutant obese mice that arose at random within a mouse colony at the Jackson Laboratory in 1950. These mice were massively obese and hyperphagic. Leptin itself was disc...
   Found on http://en.wikipedia.org/wiki/Leptin
   
   
6. 
   leptin
   (from the article `nutritional disease`) ...1990s research with genetically obese laboratory animals led to the discovery of the ob gene in mice and humans. Under the direction of this gene, ...
   Found on http://www.britannica.com/eb/a-z/l/36
   
   
7. 
   leptin
   A helical protein secreted by adipose tissue and acting on a receptor site in the ventromedial nucleus of the hypothalamus to curb appetite and increase energy expenditure as body fat stores increase. Leptin levels are 40% higher in women, and show a further 50% rise just before menarche, later returning to baseline levels; levels are lowered by fa...
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