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 Drone vs. truck deliveries: Which create less carbon pollution?
31.05.2017 | University of Washington

nachricht New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)

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: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Quantum thermometer or optical refrigerator?

23.06.2017 | Physics and Astronomy

A 100-year-old physics problem has been solved at EPFL

23.06.2017 | Physics and Astronomy

Equipping form with function

23.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>