Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The new skinny on leptin

27.09.2012
Leptin — commonly dubbed the "fat hormone" — does more than tell the brain when to eat. A new study by researchers at The University of Akron and Northeast Ohio Medical University (NEOMED) shows that leptin may play a role in hearing and vision loss. This discovery, made in zebrafish treated to produce low leptin, could ultimately help doctors better understand sensory loss in humans.
While the scientists expected the leptin-deficient fish would be unable metabolize fat, "we did not expect that the leptin also affects the development of sensory systems," says Richard Londraville, UA professor of biology.

Hormone's powerful impact

"We discovered that leptin influences the development of eyes and ears in fish," says Londraville, explaining how the popular hormone of study (the subject of about 30,000 reports since its 1994 discovery) also controls body temperature, immune function and bone density. The hormone's newly discovered impact on the sensory systems of fish draws renewed interest to previous leptin research on mice, Londraville says. These studies revealed that leptin loss also affects eye and ear development in mice.

Published in the Sept. 15, 2012, General and Comparative Endocrinology journal, "Knockdown of leptin A expression dramatically alters zebrafish development" explores leptin's evolution, or what it used to do, to provide clues to its impact on humans. The research was led by UA Professor of Biology Dr. Qin Liu, a leading expert on the technology that allowed leptin manipulation of the zebrafish.
Implications for humans

"There is some evidence that leptin deficiencies in fish likely have the same effect on humans, so this may be pointing toward something more widespread than we thought," Londraville says. "Perhaps more research should be spent on the sensory effects of leptin, which hasn't received much attention."

Londraville and his research colleagues will further their research, which was initially launched with a $250,000 National Institutes of Health grant. The team was granted an additional $435,000 in NIH funding, which they will use over the next three years to study how leptin is controlled differently in mammals and fish and the resulting consequences.

Media contact: Denise Henry, 330-972-6477 or henryd@uakron.edu

Denise Henry | EurekAlert!
Further information:
http://www.uakron.edu

More articles from Studies and Analyses:

nachricht Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
17.03.2017 | University of Maryland

nachricht Diabetes Drug May Improve Bone Fat-induced Defects of Fracture Healing
17.03.2017 | Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>