Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Cigarette Smoke Changes Lung’s Arterial Walls: Study

03.04.2002


It is well known that tobacco consumption causes a respiratory disease called chronic obstructive pulmonary disease (COPD), characterized by formation of emphysema and progressive destruction of the lung.

When pulmonary vessels are altered in this disease, life expectancy of the patients worsens. It has not been possible to establish the cause, but it has been attributed to low oxygen concentration in the blood.

However, changes in the pulmonary vessels have also been found in COPD patients with normal oxygen concentrations. These abnormalities mainly consist of the thickening of the internal coat of pulmonary arteries, resulting in a decrease of the arterial lumen size.

The cellular and extracellular components that are involved in this enlargement are unknown.

A study published in this month’s European Respiratory Journal (ERJ) by Prof. J.A. Barbera of the Servei de Pneumologia Hospital Clinic in Barcelona, Spain, and colleagues was designed to characterize the changes occurring in pulmonary arteries of patients with mild COPD and in smokers who have not yet developed the disease.

The researchers found that the thickening of the wall is mainly due to the proliferation of smooth muscle cells with synthetic capacity, as well as elastin and collagen deposition.

These alterations occur in both groups of patients to the same degree.

These findings indicate that cellular and extracellular changes of pulmonary vessels may be originated at an early stage in cigarette smoke-induced respiratory disease, suggesting that tobacco consumption is possibly the direct cause of these changes

Prof. J.A. Barbera | Daily University Science News

More articles from Studies and Analyses:

nachricht Disarray in the brain
18.12.2017 | Universität zu Lübeck

nachricht Amputees can learn to control a robotic arm with their minds
28.11.2017 | University of Chicago Medical Center

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: Error-free into the Quantum Computer Age

A study carried out by an international team of researchers and published in the journal Physical Review X shows that ion-trap technologies available today are suitable for building large-scale quantum computers. The scientists introduce trapped-ion quantum error correction protocols that detect and correct processing errors.

In order to reach their full potential, today’s quantum computer prototypes have to meet specific criteria: First, they have to be made bigger, which means...

Im Focus: Search for planets with Carmenes successful

German and Spanish researchers plan, build and use modern spectrograph

Since 2016, German and Spanish researchers, among them scientists from the University of Göttingen, have been hunting for exoplanets with the “Carmenes”...

Im Focus: First-of-its-kind chemical oscillator offers new level of molecular control

DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.

Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

The body's street sweepers

18.12.2017 | Life Sciences

Fast flowing heat in layered material heterostructures

18.12.2017 | Materials Sciences

Life on the edge prepares plants for climate change

18.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>