Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Scientists identify molecular link between body fat and blood lipids

11.11.2005


Scientists from Wageningen University in the Netherlands have discovered that a factor released from body fat, which they call Fasting-Induced Adipose Factor or FIAF, has a major impact on blood levels of HDL and triglycerides in mice. The factor might be a promising drug candidate, team leader dr. Sander Kersten says. “Our study demonstrates that small changes in the production of FIAF in mice elevate blood HDL and triglycerides.”



Obesity is known to negatively influence the level of cholesterol and other fats in our blood, often causing a condition called dyslipidemia. For many years, researchers have suspected that factors secreted from body fat affect blood lipids, yet promising candidates are hard to find. Kersten explains: “We know that elevated blood levels of HDL are protective against cardiovascular disease, whereas elevated triglycerides are considered harmful. Obese people often have low HDL levels and elevated levels of triglycerides, and are therefore at increased risk for cardiovascular disease.”

“For years we have known that diet has an influence on blood lipids but improvements achieved by dietary changes alone are often unsatisfactory. While statins are very effective in reducing blood LDL levels, they hardly touch HDL and triglycerides. Therefore, there is a need for drugs that specifically address HDL and/or triglycerides. A promising drug candidate may be FIAF.” says Kersten.


The paper, which was published online on November 4 in the Journal of Biological Chemistry, shows that transgenic mice that produce more FIAF have elevated blood HDL and triglyceride levels. According to the paper, FIAF raises triglyceride levels by blocking the removal of triglycerides from blood.

What is remarkable is that FIAF binds to HDL and LDL particles. Many proteins are attached to lipoproteins circulating in blood but almost all of them are produced in liver. It is very unusual to find a protein produced in fat tissue being bound to lipoproteins.

According to Kersten, the binding to lipoproteins also shows a clear difference between mouse and human. “In mice FIAF appears to be bound to both LDL and HDL, but in humans it is only bound to HDL. It is not clear what the implications are of this variation but FIAF might very well act differently in humans than in mice.”

One possibility is that in humans FIAF mainly affects HDL levels and hardly influences triglycerides. Such an effect would be protective against cardiovascular disease.

Whether FIAF is effective towards HDL or triglycerides in humans will ultimately determine its potential as a drug target. “Right now, it is too early to tell. Hopefully, in the next few years we will get better insight into what FIAF actually does in humans”, says Kersten.

Jac Niessen | EurekAlert!
Further information:
http://www.wur.nl
http://www.wau.nl/pers/05/089wue.html

More articles from Life Sciences:

nachricht Immune Defense Without Collateral Damage
23.01.2017 | Universität Basel

nachricht The interactome of infected neural cells reveals new therapeutic targets for Zika
23.01.2017 | D'Or Institute for Research and Education

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Quantum optical sensor for the first time tested in space – with a laser system from Berlin

For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.

According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Tracking movement of immune cells identifies key first steps in inflammatory arthritis

23.01.2017 | Health and Medicine

Electrocatalysis can advance green transition

23.01.2017 | Physics and Astronomy

New technology for mass-production of complex molded composite components

23.01.2017 | Process Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>