Featured Research

from universities, journals, and other organizations

Scientists Open Doors To Diagnosis Of Emphysema

Date:
August 13, 2009
Source:
European Molecular Biology Laboratory (EMBL)
Summary:
A new development may provide powerful new test for inflammatory lung diseases. Chronic inflammatory lung diseases like chronic bronchitis and emphysema are a major global health problem, and the fourth leading cause of death and disability in developed countries, with smoking accounting for 90% of the risk for developing them. New work has shed light on the underlying disease process of emphysema using a technique which could in future be adapted for use in diagnosis.

hronic inflammatory lung diseases like chronic bronchitis and emphysema are a major global health problem, and the fourth leading cause of death and disability in developed countries, with smoking accounting for 90% of the risk for developing them. Work by scientists at the European Molecular Biology Laboratory (EMBL) and its Molecular Medicine Partnership Unit (MMPU) with the University of Heidelberg, Germany, has shed new light on the underlying disease process of emphysema using a technique which could in future be adapted for use in diagnosis.

The researchers present a new strategy for testing the activity of MMP12, an enzyme known to be involved in the development of emphysema. Emphysema is characterised by the damage and destruction of the alveoli, the tiny air-sacs of the lungs that are crucial for respiration and uptake of oxygen from the air.

Cigarette smoke and other irritants activate immune cells, like macrophages, in the lungs to destroy the foreign material, and chronic exposure causes inflammation. MMP12 is an enzyme secreted by macrophages which usually helps them to break down the extracellular matrix (the complex network of proteins and fibers that surround and support the cells of the body), a process important for normal wound healing. However, over-stimulation of macrophages by irritants leads to build up of excess MMP12, which starts to damage the delicate structure of the small airspaces of the lungs, eventually leading to emphysema.

“We developed a tool which, for the first time, allows us to study MMP12 activity in specific cells, as if we were actually looking inside the lungs,” says Carsten Schultz, whose group carried out the research at EMBL.

The researchers designed a special fluorescent probe that essentially allows MMP12 activity in macrophages to be quantified by the amount of fluorescence they take up. Applying this test to samples of lung cells from a mouse model of acute lung inflammation showed that MMP12 activity in macrophages was indeed increased.

Although the study was performed in mice, the researchers hope that in future it will be possible to adapt the test for use in patients. “It would allow us to use MMP12 as a biomarker to monitor disease evolution and the risk of emphysema formation. It could also serve to examine the response to therapeutic interventions in patients with inflammatory lung diseases,” says Marcus Mall, group leader at the Children's Hospital at the University of Heidelberg.

The EMBL and University researchers hope that the new testing strategy can be extended to other enzymes involved in lung inflammation and that, with a better picture of the processes underlying these diseases, future treatments could be more specific, reducing the side-effects often caused by broad spectrum treatments.


Story Source:

The above story is based on materials provided by European Molecular Biology Laboratory (EMBL). Note: Materials may be edited for content and length.


Journal Reference:

  1. A. Cobos-Correa, J. Trojanek, S. Diemer, M.A. Mall & C. Schultz. MMP12 activity in pulmonary inflammation visualized by a membrane-targeted fluorescent reporter. Nature Chemical Biology, 3 August 2009

Cite This Page:

European Molecular Biology Laboratory (EMBL). "Scientists Open Doors To Diagnosis Of Emphysema." ScienceDaily. ScienceDaily, 13 August 2009. <www.sciencedaily.com/releases/2009/08/090803083910.htm>.
European Molecular Biology Laboratory (EMBL). (2009, August 13). Scientists Open Doors To Diagnosis Of Emphysema. ScienceDaily. Retrieved October 1, 2014 from www.sciencedaily.com/releases/2009/08/090803083910.htm
European Molecular Biology Laboratory (EMBL). "Scientists Open Doors To Diagnosis Of Emphysema." ScienceDaily. www.sciencedaily.com/releases/2009/08/090803083910.htm (accessed October 1, 2014).

Share This



More Health & Medicine News

Wednesday, October 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pregnancy Spacing Could Have Big Impact On Autism Risks

Pregnancy Spacing Could Have Big Impact On Autism Risks

Newsy (Oct. 1, 2014) A new study says children born less than one year and more than five years after a sibling can have an increased risk for autism. Video provided by Newsy
Powered by NewsLook.com
Robotic Hair Restoration

Robotic Hair Restoration

Ivanhoe (Oct. 1, 2014) A new robotic procedure is changing the way we transplant hair. The ARTAS robot leaves no linear scarring and provides more natural results. Video provided by Ivanhoe
Powered by NewsLook.com
Insertable Cardiac Monitor

Insertable Cardiac Monitor

Ivanhoe (Oct. 1, 2014) A heart monitor the size of a paperclip that can save your life. The “Reveal Linq” allows a doctor to monitor patients with A-Fib on a continuous basis for up to 3 years! Video provided by Ivanhoe
Powered by NewsLook.com
Attacking Superbugs

Attacking Superbugs

Ivanhoe (Oct. 1, 2014) Two weapons hospitals can use to attack superbugs. Scientists in Ireland created a new gel resistant to superbugs, and a robot that can disinfect a room in minutes. Video provided by Ivanhoe
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins