Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Yale researchers discover VEGF molecule contributes to the development of asthma

30.09.2004


In a whole new approach to asthma research, scientists at Yale have discovered that a molecule called Vascular Endothelial Growth Factor (VEGF) likely plays an important role in the development of the disease and raises the possibility of new asthma drugs that block VEGF receptors and signaling pathways.



VEGF is normally associated with the growth of new blood vessels in the lung and other organs. Yale researchers found, however, that in addition to this function, VEGF can also induce asthma-like abnormalities in the airway. When VEGF is expressed in the lungs of genetically engineered "transgenic" mice, asthma-like alterations develop, according to a report in the journal Nature Medicine.

"In humans with asthma, there is an increased level of VEGF, so we mimicked this condition in mice by over expressing VEGF in their lungs," said principal investigator Jack A. Elias, M.D., section chief of pulmonary and critical care medicine at Yale School of Medicine. "To our surprise, in addition to growing new blood vessels, many other features of asthma were also seen in these mice. We saw mucous formation, airway fibrosis and asthma-like pulmonary function abnormalities. We also found that if you block VEGF, you block the asthma-like manifestations in other mouse asthma models."


Previous studies showed that people with allergies and asthma have an excess of T-helper type 2 cells (TH2). Elias and his team found that when VEGF is produced, the TH2 response is increased.

A high percentage of people with asthma have allergies. They also have a higher tendency to become allergic to particles and antigens to which they are exposed. Normal individuals become tolerant to the same agents, instead of becoming allergic. "The reason why some people develop this tolerance and others don’t has never been understood," Elias said. "We found that this tolerance is broken in the genetically-engineered transgenic mice, suggesting that the VEGF-induced break in tolerance contributes to the allergic sensitization of asthmatic patients."

Elias and his team are currently examining how VEGF works at the cellular and molecular level. These latest findings add to the growing body of research from Elias’s lab that has advanced knowledge of asthma, a rapidly increasing chronic lung condition, which affects millions of people around the world.

Other authors on the study included Chun Geun Lee, M.D., Holger Link, M.D., Robert J. Homer, M.D., Svetlana Chapoval, M.D., Vineet Bhandari, M.D., Min Jong Kang, M.D., Lauren Cohn, M.D., and Yoon Keun Kim, M.D., of Yale; and Peter Baluk and Donald M. McDonald, M.D. of University of California/San Francisco.

Karen N. Peart | EurekAlert!
Further information:
http://www.yale.edu

More articles from Life Sciences:

nachricht Researchers identify potentially druggable mutant p53 proteins that promote cancer growth
09.12.2016 | Cold Spring Harbor Laboratory

nachricht Plant-based substance boosts eyelash growth
09.12.2016 | Fraunhofer-Institut für Angewandte Polymerforschung IAP

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>