Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behavior, finds that the hormone leptin reduces food intake, in part, by activating the hippocampus, an area of the brain that controls learning and memory function.
Leptin is a hormone released from fat cells that acts on the brain to inhibit feeding. Researchers from the University of Pennsylvania found that when leptin was delivered directly to the hippocampus in rats, the animals consumed less food and lost body weight. Leptin delivered to this region of the brain also impaired the ability of the animals to learn about the spatial location of food.
These findings highlight the need for future research aimed at identifying the role of cognitive processes in food intake and body weight control. “Feeding is a complex behavior that is not always driven by hunger or need. An element of our research program is focused on understanding how learning and memory contribute to excessive food intake, and ultimately obesity,” says Dr. Scott Kanoski, lead author. When fat stores are plentiful, humans and animals may be less focused on learning about cues that provide information about food location and availability. According to Kanoski, “these findings suggest that the brain receives and responds to signals about body energy status, specifically the amount of body fat reserves, and in turn these signals influence what type of environmental cues we learn about. When leptin signaling is impaired, which is common in obesity, cognitive processes that normally would help inhibit or decrease food intake may also be compromised.”
Supported by NIH grant DK21397
Lead Author: Scott Kanoski, University of Pennsylvania, Psychology Department, Philadelphia, PA, USACo-Authors: HS Greenwald, MR Hayes, HJ Grill
Jamie Price | EurekAlert!
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
28.04.2017 | Event News
20.04.2017 | Event News
18.04.2017 | Event News
28.04.2017 | Medical Engineering
28.04.2017 | Earth Sciences
28.04.2017 | Life Sciences