Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-24279
Lutz, T A (2009). Physiologischer Weitblick ist gefragt. Hormone als Boten des Fetts zur langfristigen Modulation von Hunger und Sättigung. Aktuelle Ernährungsmedizin, 34(Supple):22-25.
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Leptin, insulin, and amylin are the so called adi− posity signals; they inform the brain about the amount of fat deposited in the body. Leptin is produced and secreted directly by the fat cells, depending on the amount of body fat, whereas insulin and amylin originate from the pancreas. All 3 adiposity signals reduce food intake and increase energy release. Part of their effect is to increase the action of physiological satiation sig− nals. If the amount of fat increases, however, lep− tin resistance often develops. This explains why, for example, the regulation mechanisms trigge− red by leptin do not work effectively in obese people. When used in combination, these hormo− nes achieve a greater reduction in appetite and therefore body weight; they thus represent an in− teresting therapeutic option. Adiposity signals influence other bodily functions too. Sufficiently high concentrations of leptin and insulin are es− sential for successful reproduction. From a teleo− logical perspective, this seems to make a lot of sense because reproduction (pregnancy, lacta− tion) is a process that requires a lot of energy, so that sufficient energy reserves are beneficial.
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|Other titles:||Wanted: Physiological vision Hormones as adiposity signals for the long−term modulation of hunger and satiety|
|Item Type:||Journal Article, not refereed, further contribution|
|Communities & Collections:||05 Vetsuisse Faculty > Institute of Veterinary Physiology|
|Dewey Decimal Classification:||570 Life sciences; biology|
|Deposited On:||09 Dec 2009 13:50|
|Last Modified:||23 Nov 2012 15:42|
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