Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Diabetes drug works by enhancing fat cell energy production


Mitochondrial remodeling in adipose tissue associated with obesity and treatment with rosiglitazone

Energy homeostasis is controlled by a complex series of cellular and hormonal interactions. White fat tissue has been shown by mouse-knockout studies and the identification of fat-specific secreted factors to be central to this process. Drugs for type 2 diabetes that enhance sensitivity to insulin, such as rosiglitazone, work through mechanisms that involve fat. Cell culture work has indicated that rosiglitazone alters the mitochondria of fat cells, both in their structural features and in the types of proteins they produce. Mitochondria are what make the cell’s energy.

Silvia Corvera and colleagues, from University of Massachusetts Medical School, examined in live animals the effects of rosiglitazone through studies on white fat tissue in an obesity mouse model called ob/ob mice. The authors found that at the onset of obesity in the ob/ob mice, there was decreased expression of about 50% of the mitochondrial protein genes. When these mice were treated with rosiglitazone, half of these genes showed increased expression. Additionally, the mitochondria in the white fat cells of treated ob/ob mice had increased size and altered structure.

The oxygen consumption, reflecting energy use, of these cells was also significantly higher. The work here provides live animal evidence that rosiglitazone treatment works by modifying mitochondrial structure and increasing white fat cell tissue energy, which indicates that increased lipid utilization by fat cells improves insulin sensitivity and alters whole-body energy homeostasis.

Laurie Goodman | EurekAlert!
Further information:

More articles from Health and Medicine:

nachricht NIH scientists describe potential antibody treatment for multidrug-resistant K. pneumoniae
14.03.2018 | NIH/National Institute of Allergy and Infectious Diseases

nachricht Researchers identify key step in viral replication
13.03.2018 | University of Pittsburgh Schools of the Health Sciences

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

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

Im Focus: Tiny implants for cells are functional in vivo

For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.

In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

Im Focus: Surveying the Arctic: Tracking down carbon particles

Researchers embark on aerial campaign over Northeast Greenland

On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...

Im Focus: Unique Insights into the Antarctic Ice Shelf System

Data collected on ocean-ice interactions in the little-researched regions of the far south

The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...

Im Focus: ILA 2018: Laser alternative to hexavalent chromium coating

At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.

When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Virtual reality conference comes to Reutlingen

19.03.2018 | Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

Latest News

A new kind of quantum bits in two dimensions

19.03.2018 | Physics and Astronomy

Scientists have a new way to gauge the growth of nanowires

19.03.2018 | Materials Sciences

Virtual reality conference comes to Reutlingen

19.03.2018 | Event News

Science & Research
Overview of more VideoLinks >>>